Name
Chapter 11, Lesson 2
Reteach
Date
Divide Fractions by a Counting
Number
CA Standards
NS 2.4, NS 2.5
Find _2_ ÷ 4.
3
Step 1 Write the whole
number as a fraction.
Step 2 Find the
reciprocal of the divisor.
_2_ ÷ 4 = _2_ ÷ _4_
3
3
1
To find the reciprocal, flip the
fraction upside down.
The reciprocal of _41_ is _14_.
Step 3 Rewrite as a
multiplication problem using
the reciprocal.
_2_ ÷ _4_ = _2_ × _1_
3
1
3
4
Step 4 Look for common factors to divide.
1
2×1
1×1
_____
= _____
= _16_
3×4
3×2
2
Divide. Write each answer in simplest form.
4
1. __
5
÷4=
7
5. ___
÷7=
4
9. ___
÷ 12 =
12
15
3
13. __
8
÷2=
2
2. __
÷7=
2
3. __
÷7=
3
4. __
5
÷4=
1
6. __
2
÷ 12 =
5
7. __
÷ 10 =
6
8. __
÷3=
4
10. __
÷ 16 =
9
11. __
5
÷6=
5
12. __
8
15. __
÷4=
8
16. ___
3
5
7
14. ___
15
÷ 14 =
7
4
3
8
7
÷ 10 =
12
÷4=
Writing Math How do you find the reciprocal of a whole
number?
Reteach
Use with text pages 230–232.
Copyright © Houghton Mifflin Company. All rights reserved.
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