Page 122 - Math Genius C4

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Word Problems

1 2
Example 1: Anuradha reads of a storybook on Monday and on Tuesday. What
5 5
part of the book does she read in two days?

1
Solution: Part of the storybook read on Monday =
5
2
Part of the storybook read on Tuesday =
5
+
1 2 12 3
Total part of the book read in two days = += =
5 5 5 5

3
Thus, Anuradha reads of the storybook in two days.
5

1 1
Example 2: A bucket contained 18 litres of milk. If 6 litres of milk was taken out,
2 2

how much milk was left in the bucket?
1 37
Solution: Quantity of milk in the bucket = 18 litres= litres
2 2

1 13
Quantity of milk taken out = 6 litres= litres
2 2
−
37 13 37 13 24
Quantity of milk left in the bucket = − = = = 12 litres
2 2 2 2

Thus, 12 litres of milk was left in the bucket.

Practice Time 6e

1. Add the following and express the answer in the simplest form.

9 8 5 8 5 7 4 5 2
(a) + (b) + (c) + (d) + +
4 4 9 9 12 12 7 7 7
8 24 15 1 1 4 2 1 1
(e) + + (f) 1 + (g) 2 + (h) 2 + 1
11 11 11 6 6 5 5 9 9
2. Subtract the following. Reduce the difference to the simplest form.

10 7 9 9 5 3 9 7
(a) − (b) − (c) − (d) −
11 11 13 13 16 16 17 17

3 1 1 1 7 1 3 2
(e) 6 − 2 (f) 4 − 3 (g) 5 − 4 (h) 13 − 11
4 4 12 12 16 16 17 17

120 Mathematics-4