## Whole Numbers 2.2

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1. Find the sum by suitable rearrangement:
(a) 837 + 208 + 363 (b) 1962 + 453 + 1538 + 647

2. Find the product by suitable rearrangement:
(a) 2 × 1768 × 50 (b) 4 × 166 × 25 (c) 8 × 291 × 125
(d) 625 × 279 × 16 (e) 285 × 5 × 60 (f) 125 × 40 × 8 × 25

3. Find the value of the following:
(a) 297 × 17 + 297 × 3 (b) 54279 × 92 + 8 × 54279
(c) 81265 × 169 – 81265 × 69 (d) 3845 × 5 × 782 + 769 × 25 × 218

4. Find the product using suitable properties.
(a) 738 × 103 (b) 854 × 102 (c) 258 × 1008 (d) 1005 × 168

5. A taxidriver filled his car petrol tank with 40 litres of petrol on Monday. The next day,
he filled the tank with 50 litres of petrol. If the petrol costs Rs 44 per litre, how much
did he spend in all on petrol?

6. A vendor supplies 32 litres of milk to a hotel in the morning and 68 litres of milk in the evening. If the milk costs Rs 15 per litre, how
much money is due to the vendor per day?

7. Match the following:
(i) 425 × 136 = 425 × (6 + 30 +100) (a) Commutativity under
multiplication.
(ii) 2 × 49 × 50 = 2 × 50 × 49 (b) Commutativity under addition.
(iii) 80 + 2005 + 20 = 80 + 20 + 2005 (c) Distributivity of multiplication