Page 78 - Math Skill - 5

76 Maths

2. Divide the following.
2 1 2 3 2
(a) by 3 (b) by (c) 7 by 4 (d) 2 by 18
3 3 5 8 5
3. Divide the following.

2
1
2
(a) 10 ÷ 4 (b) 12 ÷ 1 1 (c) 4 ÷ 11 (d) 4 ÷ 3 1
2 3 5 5 27 9
Word Problems

Let’s Attempt
3 1
Example 1: If the cost of 2 kg of apples is ` 145 . Find the cost of 1 kg of apples.
4 5
3 1 726
Solution: Cost of 2 kg of apples = ` 145 = `
4 5 5
726 3
Cost of 1 kg of apples = ` ÷ 2
5 4
66
726 11 726 4 264 4
= ÷ = × = = ` 52
5 4 5 11 5 5
4
Hence, cost of 1 kg of apples is ` 52 .
5
3 1
Example 2: The product of two fractions is 9 . If one of the fractions is 1 , find the other.
5 55
3 48
Solution: Product of two fractions = 9 =
5 5
1 56
One of the fractions = 1 =
55 55

6 11
The other fraction = 48 ÷ 56 = 48 × 55 = 66 = 9 3
5 55 5 56 7 7
1 7

Example 3: Rohit needed 10 L of juice. He bought 8 half litre bottles of juice and the
3 3
remaining juice in L bottles. How many L bottles did he buy?
4 4
1 1
Solution: Juice bought in L bottles =×8 L = 4 L
2 2

3
Juice bought in L bottles = 10 L – 4 L = 6 L
4