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2. Subtract the following.
17 2 17 25 3 5 7 3
( a) – ( b) – ( c) – ( d) 3 – 2
44 11 32 48 4 12 22 11
4 9 3 1 8 21 11 3
( e) 18 – 7 ( f) 8 – 3 ( g) 8 – ( h) 19 – 17
5 10 8 5 17 51 18 4
3. Simplify the following.
3 2 3 3 3 5 7 2 11
( a) 4 – + ( b) 6 + – 1 ( c) 5 + 2 –
5 3 10 4 5 6 8 3 12
7 5 3 5 3 1 1 3 1 1
( d) 4 – 1 – ( e) 7 – 1 – 1 ( f) 8 – 2 + 2 –
21 6 4 6 4 2 3 5 2 2

4. An empty basket weighs 1 4 kg. Ravi puts 2 1 kg of apples in the basket. Find the total
5 3
weight of the basket with the apples.

5. Rohan's father purchased 1 1 metres of cloth for Rohan and 1 2 metres for his younger
2 3
brother. How many metres of cloth did Rohan's father purchase?
5 3
6. A 3 cm thick board is glued to another board whose thickness is 4 cm. What is
16 8
the combined thickness of the board?
4
7. A vessel had litre of milk. In the night Viban drank 1 litre of milk from the vessel.
8 12
How much milk was left in the vessel?

8. On Sports Day, Arun jumped 2 7 metres in a long jump competition and his classmate
8
2
Varun jumped metres less than Arun. How
3 Think Tank Critical Thinking
long was Varun’s jump? 1

3
9. Riya used 1 1 kg of sugar for pudding, kg Riya spent of her pocket
2
2 4 money on a book and 1 of the
1
of sugar for ice-cream and kg of sugar for 3
8 remaining amount on a pen. If she
cupcakes. How much sugar did she use in total? now has `80 left, how much pocket
money did she have in the beginning?
Multiplication oF Fractions

Multiplication of a Fraction by a whole number

To multiply a fraction by a whole number or a whole number by a fraction, multiply the
numerator of the fraction by the whole number and keep the denominator the same.

Example 1: Multiply the following:
4
1
3
( a) × 3 (b) × 7 (c) 2 × 14
4 5 7
1
Solution: ( a) 1 × 3 = 1 × 3 = 3 ( b) 3 × 7 = 3 × 7 = 21 = 4
4 4 4 5 5 5 5
4
( c) 2 × 14 = 18 × 14 = 18 × 14 = 18 × 2 = 36
7 7 7

Mathematics-5 91