Page 47 - SM Class 5 Inner.cdr

E xercise 4.2

1. Express as mixed fractions :

15 35 21 61 96
a. b. c. d. e.
4 8 4 8 5
31 79 55 90 23
f. g. h. i. j.
7 13 17 7 9

2. Express as improper fractions :

3 2 1 1 7
a. 2 b. 9 c. 3 d. 6 e. 8
4 7 6 3 25

1 2 7 3 7
f. 5 g. 2 h. 6 i. 5 j. 6
3 7 8 5 12

3. Fill in the box to make the fractions equivalent :

3 ___ 18 2 ___ 8 4 ___ 28
a. = = b. = = c. = =
5 15 ___ 7 21 ___ 9 81 ___

7 ___ 56 4 20 ___ 1 3 ___
d. = = e. = = f. = =
8 24 ___ ___ 35 105 4 ___ 24

Multiplication of a whole number and a fraction

Multiplication is repeated addition. Therefore, the multiplication of a fraction by a
whole number is repeated addition of the fraction.

1 1 1
4 4 4

1
3 ´ = 3 one fourths together
4

+
+
1 1 1 ( 1 1 1) 3
= + + = = 3
4 4 4 4 4
4
1 3
So, 3 ´ =
4 4

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