Date: P H A TE R C Name: 6 Fractions and Mixed Numbers Worksheet 1 Adding Fractions Find the equivalent fraction. Shade the models. Example 2 _ 3 ? 6 2 — — 3 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 9 1. 1 _ 2 ? 1 — — 2 2. 3 — 5 ? 3 — — 5 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 139 139 3/9/09 6:03:48 PM Name: Date: Find the equivalent fractions. Example 5 1 5 5 25 To get the equivalent fraction, multiply both the numerator and the denominator by the same number. 5 5 4. 7 9 9 12 3 5. 6. 16 24 4 140 2 3 12 18 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 3 3. Chapter 6 Lesson 6.1 MS_Reteach 4A_Ch06_139-194.indd 140 11/5/09 9:19:24 AM Name: Date: Find the equivalent fractions. Complete the model by shading the correct number of parts. Then add the fractions. Example 1 2 _ _ 9 3 ? Step 1 1 Change the denominator of _ to 9. 3 3 1 _ — 3 9 3 1 3 3 9 3 Add the like fractions. Step 2 5 9 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 2 _ _ 9 3 3 9 7. 3 2 _ — 9 9 5 _ 9 2 9 3 1 _ _ 4 8 1 4 1 _ 4 2 3 3 1 _ _ _ 4 8 8 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 141 141 3/10/09 1:47:19 PM Name: 8. Date: 1 1 _ _ 12 3 1 3 1 _ 3 1 1 _ _ 12 3 Example 3 3 1 2 _ _ _ ? 9 9 3 1 _ 3 1 3 3 — 9 3 9 3 9 3 2 9 8 9 142 3 9 3 1 2 — — — 9 9 3 3 — 9 3 2 — — 9 9 8 — 9 3 8 1 2 _ _ — So, _ . 9 9 9 3 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. Complete the models. Then add the fractions. Chapter 6 Lesson 6.1 MS_Reteach 4A_Ch06_139-194.indd 142 11/5/09 12:19:45 PM Name: 9. Date: 3 1 1 _ _ _ 2 8 8 4 1 2 1 _ 2 4 1 8 3 8 3 1 1 1 — — — — 2 8 8 8 3 — 8 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 10. 5 1 1 _ _ _ 4 12 12 1 _ 4 5 1 1 — — — 4 12 12 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 143 143 3/9/09 6:03:50 PM Name: Date: Express each fraction in simplest form. Example 8 3 4 24 32 To simplify a fraction, divide both the numerator and the denominator by the same number. 8 3 24 _ — 32 11. 12 _ _ 34 12. 18 _ _ 42 13. 21 _ _ 63 144 A fraction is in its simplest form when the numerator and the denominator cannot both be divided by the same number. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 4 Chapter 6 Lesson 6.1 MS_Reteach 4A_Ch06_139-194.indd 144 11/5/09 9:19:49 AM Name: Date: Add. Express each answer in simplest form. Example 2 1 _ _ ? 5 5 To add like fractions, add the numerators. 2 5 1 5 3 2 1 So, _ _ —. 5 5 5 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. ? 14. 2 7 3 2 _ _ _ 7 7 3 7 ? 15. 2 4 _ _ _ 9 9 2 9 4 9 ? _ 16. 5 7 _ _ _ 12 12 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 145 145 3/9/09 6:03:52 PM Name: 17. Date: 3 2 1 _ _ _ 5 10 10 3 _ 10 1 _ 10 2 5 1 4 5 1 1 _ _ _ 4 6 12 146 5 _ 12 1 6 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 18. Chapter 6 Lesson 6.1 MS_Reteach 4A_Ch06_139-194.indd 146 11/5/09 9:20:25 AM Name: Date: Worksheet 2 Subtracting Fractions Find the equivalent fraction. Complete the model by shading the correct number of parts. Example 2 3 6 2 _ — ⫽ 3 9 6 9 3 4 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1. 3 _ — ⫽ 4 2 5 2. 2 — ⫽_ 5 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 147 147 11/10/09 9:04:59 AM Name: Date: Subtract. Express each answer in simplest form. Example 3 5 _ _ 6 6 1 — 3 2 — 6 3 6 ? 5 6 3 8 3. 3 5 _ _ 8 8 ? 5 8 7 10 4. 9 7 _ _ 10 10 ? 9 10 5. 148 4 7 _ _ 12 12 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. To subtract like fractions, subtract the numerators. Chapter 6 Lesson 6.2 MS_Reteach 4A_Ch06_139-194.indd 148 11/5/09 2:51:06 PM Name: Date: Complete the models by shading the correct number of parts. Then subtract the fractions. Example 3 7 _ _ 4 8 Step 1 ? 2 3 Change the denominator of _ to 8, 4 3 4 7 . so that it has the same denominator as _ 8 Step 2 2 Subtract the like fractions. 6 3 1 7 7 — — — — — 4 8 8 8 8 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 8 6 8 3 7 1 _ — . So, _ 4 8 8 6. 6 8 7 8 3 11 _ _ 4 12 3 _ 4 3 11 11 _ _ _ 4 12 12 11 12 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 149 149 3/9/09 6:03:54 PM Name: 7. Date: 5 1_ 9 1 5 1_ 9 5 _ 9 Find the equivalent fractions. Then subtract. Example ? 7 2 7 _ _ _ 9 9 3 3 6 9 2 3 3 1 — 9 7 2 1 _ _ So, _ . 9 9 3 10 8. 7 1_ 10 7 _ 10 1 1 10 150 6 9 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 7 2 _ _ 9 3 Chapter 6 Lesson 6.2 MS_Reteach 4A_Ch06_139-194.indd 150 11/5/09 9:21:43 AM Name: 9. Date: 1 7 7 _ _ _ 4 12 12 1 4 1 6 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 10. 1 11 11 _ _ _ 6 12 12 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 151 151 3/9/09 6:03:55 PM Name: Date: Complete the models. Then subtract. Example 2 1 _ 1_ ? 9 3 3 1 3 2 1 — 1— 9 3 2 9 3 9 4 9 3 9 3 2 3 — 9 — 4 — — 9 9 9 9 9 9 2 1 4 So, 1 _ _ — . 9 9 3 4 1 1_ _ 4 12 1 4 4 1 — 1— 4 12 12. 4 — 12 3 2 _ 1_ 5 10 3 5 3 2 — 1— 5 10 152 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 11. Chapter 6 Lesson 6.2 MS_Reteach 4A_Ch06_139-194.indd 152 11/5/09 9:22:01 AM Name: Date: Find each difference. Express your answer in simplest form. Example 2 1 _ 1_ ? 9 3 2 1 1_ _ 9 3 9 — 9 2 — 9 3 3 — 9 1 3 3 9 3 4 — 9 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 2 1 4 _ _ . So, 1 _ 9 9 3 13. 2 17 17 _ _ _ 21 3 21 2 3 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 153 153 3/9/09 6:03:56 PM Name: 14. Date: 5 1 1_ _ 4 12 5 _ 12 1 4 1 4 15. 3 1 1_ _ 4 20 154 3 _ 20 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. Chapter 6 Lesson 6.2 MS_Reteach 4A_Ch06_139-194.indd 154 11/5/09 12:19:31 PM Name: Date: Worksheet 3 Mixed Numbers Shade the model to show each mixed number. Example 1 2_ ? 3 1 whole When you add a whole number and a fraction, you get a mixed 1 is a mixed number. number. 2— 3 1 So, 2 _ 3 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 3 1 whole 2—1 3 . 1. 1 whole 3 8 3 1_ 8 2. 1 whole 1 whole 3 _ 5 3 2_ 5 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 155 155 3/9/09 6:03:59 PM Name: Date: Find the mixed number that describes each model. Example 1 whole 1 whole 4 2 — 9 4 ninths 4 2— 9 3. 1 whole 1 whole 1 whole 3 fifths 1 whole 1 whole 7 twelfths Write each mixed number on the number line. Example 1 1_ 2 0 156 1 12 1 2 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 4. Chapter 6 Lesson 6.3 MS_Reteach 4A_Ch06_139-194.indd 156 11/5/09 9:22:21 AM Name: Date: 1 1_ 3 5. 6. 0 1 2 2_ 3 2 3_ 3 7. 2 3 4 Express each mixed number in simplest form. Example 2 1_ ? 4 Method 1 Draw models. Method 2 Divide the numerator and the denominator by the same number. 2 4 2 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 2 4 1 2 2 1 2 2 1 So, 1_ 1_ . 4 2 8. 3 2_ 12 2 1 So, 1_ 1_ . 4 2 9. 6 3_ 8 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 157 157 3/9/09 6:04:01 PM Name: Date: Find the number of wholes and parts that are shaded. Then write each sum as a mixed number in simplest form. Example 2 2 — 4 2 2—1 2— 4 2 10. 11. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 158 Chapter 6 Lesson 6.3 MS_Reteach 4A_Ch06_139-194.indd 158 11/5/09 9:23:31 AM Name: Date: Worksheet 4 Improper Fractions Write each description as a fraction. Example 1 third —1 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 3 1. 3 quarters 2. 4 fifths 3. 5 sixths 4. 6 eighths 5. 7 tenths Express each mixed number as an improper fraction. Example 2 1_ ? 3 An improper fraction is equal to or greater than 1. 1 whole 3 thirds There are 5 2 thirds in 1_ . 3 2 _ 3 2 thirds 5 _ is an improper 3 fraction. 2 5 1 _ 1 _ 1 _ 1 _ 1 _ 1_ _ 3 3 3 3 3 3 3 5 2 _ . So, 1_ 3 3 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 159 159 3/9/09 6:04:01 PM Name: 1 2_ 2 2 wholes 7. 3 1_ 4 1 whole 3 1_ 4 3 _ 4 quarters quarters 3 quarters in 1_ . 4 There are 160 half 1 halves in 2_ . 2 There are 1 2_ 2 1 _ 2 halves © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 6. Date: Chapter 6 Lesson 6.4 MS_Reteach 4A_Ch06_139-194.indd 160 11/5/09 9:23:54 AM Name: Date: Express each mixed number as an improper fraction. Use the models to help you. Example 1 How many thirds are there in 2_ ? 3 There are 7 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 2_ 7 3 8. 1 thirds in 2_ . 3 7 thirds — 3 5 How many sixths are there in 1_ ? 6 There are 5 1_ 6 9. 5 sixths in 1_ . 6 sixths 5 How many eighths are there in 3_ ? 8 There are 5 3_ 8 5 eighths in 3_ . 8 eighths Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 161 161 3/9/09 6:04:02 PM Name: Date: Express each improper fraction in simplest form. Example 6 _ 4 ? Method 1 Simplify the fractions shown by the shaded parts. 3 _ 2 6 _ 4 Method 2 Divide the numerator and the denominator by the same number. 2 6 4 3 2 2 3 6 _ . So, _ 4 10. 12 _ 8 11. 24 _ 15 12. 30 _ 8 13. 48 _ 36 162 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 2 Chapter 6 Lesson 6.4 MS_Reteach 4A_Ch06_139-194.indd 162 11/5/09 9:24:15 AM Name: Date: Write each fraction on the number line. Example 3 _ 8 3 8 0 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 14. 3 _ 4 15. 0 1 4 8 7 _ 8 4 8 16. 1 _ 2 1 3 _ — 8 4 1 — _ 8 2 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 163 163 3/9/09 6:04:03 PM Name: Date: Write the missing improper fraction in each box. Example 0 0 1 13 1 23 1 1 3 2 3 4 3 3 3 5 3 2 6 3 2 13 2 23 8 3 7 3 3 9 3 3 1 3 thirds — 3 2 2 1— 1— 3 3 3 2 — — 3 3 17. 0 0 18. 1 2 4 5 4 2 34 2 7 4 8 4 3 10 4 1 2 3 4 5 6 7 1 18 18 18 18 18 18 18 2 0 0 164 1 24 4 8 8 8 11 8 14 8 16 8 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 5 — 3 Chapter 6 Lesson 6.4 MS_Reteach 4A_Ch06_139-194.indd 164 11/5/09 9:24:33 AM Name: Date: Worksheet 5 Renaming Improper Fractions and Mixed Numbers Complete each statement. Example 3 thirds is 1 whole. 1. 2. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 4 quarters is 5 fifths is whole. 3. whole. 4. sixths is 1 whole. sevenths is 1 whole. 5. eighths is 1 whole. Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 165 165 3/9/09 6:04:04 PM Name: Date: Rename each improper fraction as a mixed number. Use models to help you. Example 7 _ ? 3 7 _ 3 7 thirds 6 thirds 1 third 1 6 1 — — 3 2— 3 3 6. 14 _ 5 fifths fifths 166 7. fifths 23 _ 6 sixths sixths sixths © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 7 1 — 2 . So, — 3 3 Chapter 6 Lesson 6.5 MS_Reteach 4A_Ch06_139-194.indd 166 11/10/09 9:14:34 AM Name: Date: Use the division rule to rename each improper fraction as a mixed number. Example 12 _ 5 ? Division Rule: Divide the numerator by the denominator. 12 5 2 R 2 2 5) 1 2 1 0 2 12 There are 2 wholes and 2 fifths in _ . 5 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 12 So, _ 5 8. 2 2_ 5 . 8 _ 3 9. 3) 8 37 _ 7 7) 3 7 There are wholes and wholes and 37 sevenths in _ . 7 8 thirds in _ . 3 8 So, _ 3 There are . 37 So, _ 7 . Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 167 167 3/9/09 6:04:05 PM Name: Date: Rename the improper fraction as a mixed number in simplest form. Then check your answer using the division rule. Example 45 _ ? 6 45 _ 45 sixths 6 42 sixths 3 sixths 3 42 — — 6 6 3 7 — Check 7 7 —1 2 7—1 2 6)4 4 3 45 1 So, _ 7— . 6 2 10. 26 _ 4 5 2 quarters quarters 45 6 7 R 3 45 _ 6 3 7_ 7—1 6 2 quarters Check 26 4 4) 2 6 26 _ 4 168 R © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 6 Chapter 6 Lesson 6.5 MS_Reteach 4A_Ch06_139-194.indd 168 11/5/09 9:26:08 AM Name: 11. Date: 48 _ 9 ninths ninths ninths Check 48 9 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. R 9) 4 8 48 _ 9 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 169 169 3/9/09 6:04:06 PM Name: Date: Use the multiplication rule to rename each mixed number as an improper fraction. Example 1 2_ ? 6 6 1 1 2_ 2_ 6 6 1 13 12 _ — — 6 6 6 2 1 Multiplication Rule 12 6 6 13 1 So, 2_ — . 6 6 1 1 4— 4_ 3 3 1 _ 3 3 4 1 3 13. 2 6_ 6 5 170 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 12. Chapter 6 Lesson 6.5 MS_Reteach 4A_Ch06_139-194.indd 170 11/5/09 9:26:32 AM Name: Date: Rename each mixed number as an improper fraction in simplest form. Check your answer. Example 3 2_ ? 4 Check 3 3 2 — 2_ 4 Step 1 4 Multiply the whole number by the denominator. 2 4 8 3 8 — — 4 4 Step 2 Add the product to the numerator. 8 3 11 3 There are 11 quarters in 2_ . 4 11 — © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 4 3 11 — So, 2_ . 4 4 14. Check 1 5— 5 2 5 There are 1 halves in 5_ . 2 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 171 171 3/9/09 6:04:06 PM Name: 15. Date: 5 7_ ⫽ 6 ⫹ Check 7⫻ ⫽ ⫹ ⫽ ⫹ There are ⫽ 5 sixths in 7_ . 6 ⫽ 8 8_ ⫽ 9 ⫽ ⫹ ⫹ Check ⫻ ⫽ ⫹ ⫽ There are ⫽ 172 8 ninths in 8_ . 9 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 16. Chapter 6 Lesson 6.5 MS_Reteach 4A_Ch06_139-194.indd 172 11/5/09 9:26:54 AM Name: Date: Worksheet 6 Renaming Whole Numbers when Adding and Subtracting Fractions Add. Express each answer as a mixed number in simplest form. Example 3 3 _ _ ? 4 4 3 3 _ _ 4 4 6 — 4 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 2 4 — — 4 4 1 2 — 2 1— 4 6 _ 4 4 _ 4 2 _ 4 4 2 1—1 2 3 1 3 So, _ — 1— . 4 2 4 2 4 1 2 2 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 173 173 3/9/09 6:04:06 PM 1. Date: 3 4 _ _ 5 5 2. 7 11 _ _ 12 12 5 _ 5 1 174 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. Name: Chapter 6 Lesson 6.6 MS_Reteach 4A_Ch06_139-194.indd 174 11/5/09 9:27:14 AM Name: Date: Find the equivalent fraction. Then add. Express each answer in simplest form. Example 7 2 _ _ ? 12 3 7 2 _ _ 8 — 7 — 12 3 12 12 3 15 — 15 12 12 5 4 3 5 — © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 4 1—1 4 7 1 2 _ — So, _ 1 . 4 12 3 3. 7 4 _ _ 10 5 4. 8 1 _ _ 9 3 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 175 175 3/9/09 6:04:07 PM Name: Date: Find the sum. Express each answer in simplest form. Example 5 4 2 _ _ _ ? 9 9 3 5 4 2 _ _ _ 9 9 3 6 — 9 5 — 9 4 — 9 15 — 9 2 5 1— — 3 3 5. 7 11 2 _ _ _ 12 12 3 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 5 4 2 2 _ _ — So, _ 1 . 9 9 3 3 176 Chapter 6 Lesson 6.6 MS_Reteach 4A_Ch06_139-194.indd 176 11/5/09 9:27:26 AM Name: Date: 3 7 _ 1_ 4 12 6. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. Express each whole number as a mixed number. Example 2 1 3 _ 3 7. 3 2_ 8 8. 4 _ 12 9. 5 2 1_ 10. 5 4 _ Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 177 177 3/9/09 6:04:07 PM Name: Date: Subtract each fraction from a whole number to get a mixed number. Example 3 2_ ? 4 Method 1 211 4 1— 4 1—1 3 — 4 4 4 1_ 1_ 4 4 4 4 Method 2 2 3 3 8 — 2_ — 4 8 4 4 2_ _ _ or 2 1 4 4 4 4 4 4 5 — 4 1—1 4 3 1 So, 2 _ 1— . 4 4 11. 3 1_ 8 178 8 4 12. 5 3_ 12 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 3 2_ 4 Chapter 6 Lesson 6.6 MS_Reteach 4A_Ch06_139-194.indd 178 11/5/09 2:11:40 PM Name: Date: 5 3_ 9 13. 14. 2 4_ 3 Subtract. Express your answer in simplest form. Example © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 5 2 _ _ ? 9 3 3 5 2 _ _ 9 3 6 — 9 —1 5 — 9 2 3 6 9 3 9 5 1 2 _ — So, _ . 9 9 3 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 179 179 3/9/09 6:04:07 PM Name: 15. Date: 7 3 _ _ 12 4 3 3 4 3 2 5 6 17. 3 4 _ _ 10 5 180 4 5 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 16. 5 5 _ _ 12 6 Chapter 6 Lesson 6.6 MS_Reteach 4A_Ch06_139-194.indd 180 11/5/09 9:29:18 AM Name: Date: Worksheet 7 Fraction of a Set Find the fraction of each set. Example 1 _ of 12 ? 3 12 pretzels are divided into 3 equal groups. 1 _ of 12 means 1 of the 3 groups of pretzels. 3 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 3 groups of pretzels 1 group of pretzels 1 of 12 is So, _ 3 1. 4 12 pretzels 4 pretzels . 1 _ of 8 4 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 181 181 3/9/09 6:04:08 PM Date: 2. 2 _ of 24 ⫽ 3 3. 3 _ of 28 ⫽ 4 4. 5 _ of 27 ⫽ 9 5. 3 _ of 48 ⫽ 8 182 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. Name: Chapter 6 Lesson 6.7 MS_Reteach 4A_Ch06_139-194.indd 182 11/5/09 9:29:55 AM Name: Date: Answer the questions. Example How many toys are shaded? 9 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 6. 24 toys are divided into equal groups. There are 7. toys are shaded. groups of toys, and groups are shaded. What fraction of the set of toys are shaded? The shaded parts ⫽ _ of the set. 8. Write the missing numbers on the model. Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 183 183 3/9/09 6:04:11 PM Name: Date: Write the missing numbers. Example 15 fruits are divided into There are fruits in each group. out of the 15 fruits in the set are shaded. 10. 11. groups. Color the parts of the model to show the number of fruits that are shaded. 3 units ⫽ 15 fruits 1 unit 12. 1 unit 1 unit What fraction of the fruits are shaded? The shaded parts ⫽ _ of the set. 13. 184 From the model, 1 unit fruits 2 units fruits © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 9. 3 Chapter 6 Lesson 6.7 MS_Reteach 4A_Ch06_139-194.indd 184 11/5/09 9:30:10 AM Name: Date: Find the fractional part of each number. Use models to help you. Example 2 _ of 12 ? 3 12 8 3 units 12 1 unit 4 2 units 4 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 2 So, _ of 12 is 3 14. 8 Divide 12 into 3 equal parts. 2 of the set. The shaded parts — 3 2 8 . 3 _ of 32 8 32 ? units 1 unit 3 units 3 So, _ of 32 8 . Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 185 185 3/9/09 6:04:13 PM Name: Date: Find the fractional part of each number. Show your work. Example 3 _ of 35 ? 5 3 _ 35 5 3 35 The word “of” means to multiply. 5 105 5 21 3 So, _ of 35 21. 5 3 _ of 28 4 16. 3 — 28 4 2 — 56 7 4 _ 4 17. 186 3 _ of 64 8 2 _ of 56 7 18. 7 — of 44 11 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 15. Chapter 6 Lesson 6.7 MS_Reteach 4A_Ch06_139-194.indd 186 11/5/09 9:30:28 AM Name: Date: Worksheet 8 Real-World Problems: Fractions Solve. Show your work. Example 1 Three friends shared a pie. Susan ate _ of the pie. 4 3 1 _ Daniel ate _ of the pie. Joe ate of the pie. 8 8 What fraction of the pie did they eat altogether? 3 1 1 _ _ _ 4 8 8 1 4 3 1 2 _ — — 8 8 8 3 8 6 3 _ — 8 2 4 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. They ate 3 _ 4 1 8 of the pie. 1 4 2 8 2 1. Lisa, Sam, and Marco each bought some dried fruit. 5 2 pound of dried fruit. Sam and Marco each bought _ pound Lisa bought _ 6 3 of dried fruit. How much dried fruit did they buy altogether? 5 5 2 _ _ _ 6 6 3 They bought 5 5 _ _ 6 6 pounds of dried fruit altogether. Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 187 187 3/10/09 2:48:48 PM Name: 2. Date: 1 Mrs. Jackson baked muffins one day. She used _ kilogram of flour to bake 4 7 kilogram of flour to bake the second the first batch of muffins. She used _ 12 11 kilogram of flour for the third batch. How much flour batch, and another _ 12 did she use altogether? ⫽ She used 3. 7 11 ⫹_ ⫹_ 12 12 ⫽ kilograms of flour altogether. 3 7 Edison made a fruit salad. He mixed _ pound of apples and _ pound of 4 12 5 pound of banana. What was the total strawberries. He then added _ 12 weight of the fruit salad? 188 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 7 11 1 _ ⫹_ ⫹_ ⫽ 12 12 4 Chapter 6 Lesson 6.8 MS_Reteach 4A_Ch06_139-194.indd 188 11/5/09 9:30:44 AM Name: Date: Example Kathy has 1 loaf of whole grain bread. 2 1 _ of it for her friend and for herself. She cuts _ 12 3 What fraction of the bread is left? Method 1 Method 2 2 1 _ 1_ 12 3 8 2 1 1 _ _ _ _ 12 12 12 3 9 _ 12 3 9 12 _ _ _ 12 12 12 1 _ 4 _1 4 loaf of bread is left. 8 12 1 _ _ _ 12 12 12 3 _ 12 1 _ 4 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. _1 4 4. loaf of bread is left. 1 4 Sam spent _ of his time playing soccer and _ of his time doing homework. 9 3 He spent the rest of his time playing computer games. How much of his time did Sam spend playing computer games? 1 3 4 9 ? 4 4 1 _ __ _ _ 9 9 9 9 3 1 9 _ 9 Sam spent of his time playing computer games. Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 189 189 11/5/09 9:31:06 AM Name: 5. Date: 1 1 Latoya bought a pizza. She ate _ of the pizza and gave _ of it to her sister. 6 3 She kept the rest of the pizza for her grandmother. How much of the pizza did Latoya keep for her grandmother? 1 6 1 3 ? 1 Latoya kept 6. of the pizza for her grandmother. Pam made mixed juice from carrot juice and apple juice. She filled a jug 3 3 7 liter of carrot juice and _ liter of apple juice. Pam then drank _ liter with _ 4 8 8 of the mixed juice. Find the amount of mixed juice that was left in the jug. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 1 _ _ 3 6 liters of mixed juice was left in the jug. 190 Chapter 6 Lesson 6.8 MS_Reteach 4A_Ch06_139-194.indd 190 11/5/09 9:31:26 AM Name: Date: Example Ling bought a total of 12 apples. Of the apples she bought, 8 are red apples and 4 are green apples. a. What fraction of the apples are red? b. What fraction of the apples are green? a. 8 out of 12 is _. 8 12 2 2 — 3 8 _ _ 12 3 b. 2 — 3 1 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 _ 3 7. of the apples are red. 1 _ 3 of the apples are green. Elan has a bag of 10 marbles. He gives 4 marbles to his brother. a. What fraction of his marbles does Elan give away? 4 out of 10 is _. __ Elan gives away b. of his marbles. What fraction of the marbles are left? 1 of the marbles are left. Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 191 191 3/10/09 1:48:51 PM Name: 8. Date: Bernice has a ribbon that is 12 centimeters long. She cuts 8 centimeters off the length of the ribbon. What fraction of the ribbon is left? Example © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 5 Dianne has $72. She uses _ of it to buy a present for her father. 9 How much money does Dianne have left? $72 5 9 ? Method 1 Method 2 9 units $72 1 unit $72 9 $8 4 units $8 4 $32 5 5 _ _ of $72 $72 9 9 Dianne has $32 left. $360 9 $40 Dianne spent $40. $72 $40 $32 Dianne has 192 $32 left. Chapter 6 Lesson 6.8 MS_Reteach 4A_Ch06_139-194.indd 192 11/5/09 9:31:44 AM Name: 9. Date: 3 Winton was given $14 to spend at his school fair. He spent _ of the money 7 playing games. How much money did Winton have left? $14 3 7 ? Method 1 Method 2 units $ 1 unit $ units $ 3 _ of $14 7 $ $ $ $ $14 $ © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. Winton had $ He spent $ $ $14 $ left. Winton had $ 10. . $ left. 5 of his farm and tulips on the rest of the land. Chris planted carrots on _ 9 The total area of his farm is 621 square meters. Find the area of the land on which he planted tulips. 621 square meters 5 Carrots: 9 Method 1 Tulips: ? Method 2 Reteach 4A MS_Reteach 4A_Ch06_139-194.indd 193 193 11/5/09 2:34:10 PM Name: 11. Date: 1 Of all the seats in an airplane, _ are business-class seats, and the rest are 3 economy class seats. There are 156 seats in the airplane. Find the number of economy class seats. 156 1 3 Method 2 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. Method 1 ? 194 Chapter 6 Lesson 6.8 MS_Reteach 4A_Ch06_139-194.indd 194 11/5/09 9:32:05 AM