RS Aggarwal Class 6 Math First Chapter Number System Exercise 1E Solution

EXERCISE 1E

Estimate each of the following products by rounding off each number to the nearest ten:

1. 38 x 63= 2394

Nearest ten is 2400

2. 54 x 47= 2538

Nearest ten is 2500

3. 28 x 63= 1764

Nearest ten is 1800

4. 42 x 75= 3150

Nearest ten is 3200

5. 64 x 58= 3712

Nearest ten is 3600

6. 15 x 34= 510

Nearest ten is 600

Estimate each of the following products by rounding off each number to the nearest hundred:

7. 376 x 123= 46248

Nearest hundred is 40000

8. 264 x 147= 38808

Nearest hundred is 30000

9. 423 x 158= 66834

Nearest hundred is 80000

10. 509 x 179= 91111

Nearest hundred is 100000

11. 392 x 138= 54096

Nearest hundred is 40000

12. 271 x 339= 91869

Nearest hundred is 90000

Estimate each of the following products by rounding off the first number upwards and the second number downwards:

13. 183 x 154= 28182

20000

14. 267 x 146= 38982

30000

15. 359 x 76= 27284

28000

16. 472 x 158= 74576

50000

17. 680 x 164= 111520

70000

18. 255 x 350= 89250

90000

Estimate each of the following products by rounding off the first number downwards and the second number upwards:

19. 356 x 278= 98968

90000

20. 472 x 76= 35872

32000

21. 578 x 369= 213282

200000