ROUNDING OFF NUMBERS WORKSHEET

1. Round 521 to the nearest tens

2. Round 521 to the nearest hundreds

3. Round 47618 to the nearest tens

4. Round 47618 to the nearest hundreds

5. Round 47618 to the nearest thousands

6. Round 47618 to the nearest ten thousands

7. Round 36.729 to two decimal places

8. Round 36.729 to one decimal place

9. Round 36.745 to two decimal places

10. Round 36.745 to one decimal place

11. Round 2.14829 to one decimal place

12. Round 2.14829 to two decimal places

13. Round 2.14829 to three decimal places

14. Round 2.14829 to four decimal places

Round off the following numbers to the nearest integer:

15. 288.29

16. 3998.37

17. 4856.795

18. 4999.96

19. 1.99

20. 1.0012

1. Answer :

Consider multiples of 10 before and after 521. (i.e. 520 and 530)

We find that 521 is nearer to 520 than to 530.

It has been illustrated in the picture given below.

Therefore, the nearest tens of 521 is 520.

2. Answer :

Consider multiples of 100 before and after 521. (i.e. 500 and 600)

We find that 521 is nearer to 500 than to 600. So, the nearest hundreds of 521 is 500.

Answers for questions 3 to 20 :

3. The nearest tens = 47,620

4. The nearest hundreds = 47,600

5. The nearest thousands = 48,000

6. The nearest ten thousands = 50,000

7. It is 36.73 round to two decimal places. (Since the last digit 9 > 5, we add 1 to 2 and make it 3).

Therefore, 36.729 ≃ 36.73 (Round to two decimal place)

8. Look at the second decimal in 36.729, Here it is 2 which is less than 5, so we leave 7 as it is.

Therefore, 36.729 ≃ 36.7 (Round to one decimal place)

9. It’s approximation is 36.75, round to two decimal places. Since the last digit is 5, we add 1 to 4 and make it 5.

10. It’s approximation is 36.7, round to one decimal place. Since the second decimal is 4, which is less than 5, we leave 7 as it is.

36.745 ≃ 36.7

11. Rounded to one decimal place is 2.1

12. Rounded to two decimal places is 2.15

13. Rounded to three decimal places is 2.148

14. Rounded to four decimal places is 2.1483

15. 288

16. 3998

17. 4857

18. 5000

19. 2

20. 1

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