Page 64 - ICSE Math 4

Progress Worksheet

Mental Maths

1. Choose the correct answer.

(a) 57 × 100 = _________
(i) 730 (ii) 5,700 (iii) 57,000 (iv) 40,300

(b) 468 × 1,000 = _________

(i) 468,000 (ii) 4,680 (iii) 46,800 (iv) 48,600
(c) _________ × 28 = 28 × 4

(i) 1 (ii) 4 (iii) 28 (iv) 0

(d) 108 × 0 = 0 × 108 = _________
(i) 0 (ii) 1 (iii) 1,080 (iv) 1,800

Solve and Answer

2. Find the following products.

(a) 37 × 22 (b) 65 × 45 (c) 363 × 15

(d) 15 × 172 (e) 305 × 19 (f) 811 × 21

3. Mul ply the following using the la ce method.
(a) 23 × 51 (b) 540 × 36 (c) 68 × 150

(d) 37 × 25 (e) 212 × 13 (f) 56 × 28

4. Shikha has 15 packets of marbles with 110 marbles in each. How many marbles
does she have altogether?

5. A garment store has 3,245 shirts and trousers. If there are 64 racks and each rack
can accommodate 26 shirts and trousers, then how many shirts and trousers are
le without the racks?
6. Es mate the product by rounding off the numbers to the nearest 10.

(a) 93 × 34 (b) 56 × 67 (c) 124 × 81

7. Es mate the product by rounding off the numbers to the nearest 100.
(a) 256 × 394 (b) 171 × 836 (c) 333 × 179

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