Adding and
Subtracting
Similar Fractions
Teacher Cherry
Objectives:
At the end of the lesson the students will be able to:
• Define similar fractions and parts of a fraction.
• Develop solving skills in adding and subtracting fractions
with similar denominators.
• Apply the concept of adding and subtracting fractions in
real life situations.
+
1
4
+
=
2
4
3
=
4
5+3 8
2 4
÷ =
=
10
10 2 5
4x2=8
5x2=10
GCF = 2
13 + 3 16 2 8
÷2=
=
22
22
11
11x2 =22
8x2_= 16
GCF = 2
Adding fractions with
WHOLE numbers
+
=
3
1
2
1 + 2 = 3
4
4
4
Step 2
Step 1
Add the whole number.
1
1
4
+
2
24
(1+2) = 3
Proceed on adding the
fraction.
1
4
+
2
4
=
3
4
Step 3
Combine the sum of whole
number and fraction.
(1+2) = 3
1
4
+
2
4
=
3
4
Final Answer:
3
3
4
Example!
2
1. 4
5
+3
1
5
3
2. 2
8
+6
4
8
Example!
2
1. 4
5
+3
Step 3
1
5
Step 1
(4+3)=7
Step 2
2 1
+
5 5
=
3
5
3
7
5
Example!
2. 2
3
8
Step 3
4
+6
8
Step 1
(2+6)= 8
Step 2
3 4
+
8 8
=
7
8
7
8
8
Assignment:
7
1. 8
10
+
3
5
10
6
4
2.
+
11 11
2 4
3.
+
9 9
3
2
4. 4 + 1
6
6
Activity: Bake your own Pizza
Instruction:
• Solve the assigned problem by your teacher.
Materials Needed:
• Illustrate your answer by creating a pizza.
Divide your pizza/s accordingly.
• Illustration Board
• Paste your pizza dough cut-out/s and design it
with your desired toppings.
• Cover your output with a plastic cover and
Pass it next week.
• Print the cut outs provided through this link:
https://drive.google.com/drive/folders/190xYa9
1SeOYFptxptAv5FGcCSfE66oPU
• Art materials
• Glue
• Plastic Cover
• Scissor
Activity: Bake your own Pizza
1.
6
1
10
2.
5
2
12
+
3
1
10
+
4
1
12
3
9
3. +
6
2
9
Subtracting
Similar Fractions
3
4
-
=
2
4
1
=
4
Example!
11 7
1.
5
5
11-5= 6
11
−
5
6
Step 2
=
5
5
Step 1
Step 3
6
5
Step 3
Example!
Simplify if needed
20 10
1.
10 10
Step 1
20-10= 10
Step 2
20−10
10
=
10
10
Example!
5
1.
8
Step 1
Step 2
-
3
8
5-3= 2
5−3 2 2
= ÷
8
8 2
Step 3
Simplify if needed
1
4
Your Turn!
1.
7 3
−
4 4
6
4
2.
−
11 11
3.
4.
5 2
−
9 9
4 1
−
6 6
Subtracting fractions
with WHOLE numbers
=
3
2
1
3 - 2 = 1
4
4
4
Example!
2. 6
4
8
Step 3
3
-2
8
Step 1
(6-2)= 4
Step 2
4
3
8
8
=
1
8
1
4
8
Example!
2
1. 4 5
Step 1
Step 2
3
Step 3
1
5
(4-3) =1
2
1
5
5
=
1
5
1
1
5
Your Turn!
2
1
1. 9 − 4
8
8
6
4
2. 3 − 2
7
7
10
7
3. 7
−5
21
21
8
2
4. 8
−1
18
18