Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 444 · 40 questions

The method (Round, then calculate): Round each number to the nearest ten, hundred or whole number. Do the easy sum with the rounded numbers. Pick the option nearest to it. To round a number, look at the digit after the place you keep: 5 or more goes up, less than 5 stays.

1. 1.Round 49768 to the nearest ten.
2. 2.Round 74.11 to one decimal place. =
3. 3.Round 63336 to the nearest hundred.
4. 4.Which is closest to 397 + 98 + 395? (a) 1000 (b) 800 (c) 900 (d) 1100
5. 5.Which is closest to 2109 ÷ 29? (a) 70 (b) 140 (c) 700 (d) 35
6. 6.Which is closest to 799 ÷ 41? (a) 10 (b) 200 (c) 40 (d) 20
7. 7.Which is closest to 902 + 899 + 804? (a) 2500 (b) 2600 (c) 2700 (d) 2800
8. 8.Which is closest to 1791 ÷ 19? (a) 900 (b) 90 (c) 45 (d) 180
9. 9.Which is closest to 504 × 18? (Round each number first.) (a) 10000 (b) 1000 (c) 100000 (d) 20000
10. 10.Which is closest to 2796 ÷ 41? (a) 140 (b) 70 (c) 700 (d) 35
11. 11.Which is closest to 900 + 196 + 698? (a) 1700 (b) 1900 (c) 1800 (d) 2000
12. 12.Which is closest to 803 × 71? (Round each number first.) (a) 112000 (b) 5600 (c) 56000 (d) 560000
13. 13.Which is closest to 297 + 701 + 97? (a) 1200 (b) 1300 (c) 1100 (d) 1000
14. 14.Round 64.51 to one decimal place. =
15. 15.Which is closest to 500 × 78? (Round each number first.) (a) 80000 (b) 4000 (c) 40000 (d) 400000
16. 16.Which is closest to 504 + 800 + 702? (a) 1900 (b) 2200 (c) 2000 (d) 2100
17. 17.Round 56602 to the nearest ten.
18. 18.Which is closest to 1205 ÷ 41? (a) 15 (b) 30 (c) 60 (d) 300
19. 19.Which is closest to 398 × 41? (Round each number first.) (a) 32000 (b) 16000 (c) 160000 (d) 1600
20. 20.Which is closest to 401 × 91? (Round each number first.) (a) 360000 (b) 72000 (c) 36000 (d) 3600
21. 21.Which is closest to 1498 ÷ 51? (a) 30 (b) 60 (c) 15 (d) 300
22. 22.Which is closest to 897 + 605 + 703? (a) 2400 (b) 2200 (c) 2300 (d) 2100
23. 23.Which is closest to 97 + 797 + 696? (a) 1700 (b) 1800 (c) 1600 (d) 1500
24. 24.Which is closest to 696 × 72? (Round each number first.) (a) 98000 (b) 490000 (c) 49000 (d) 4900
25. 25.Which is closest to 695 + 505 + 102? (a) 1400 (b) 1300 (c) 1200 (d) 1500
26. 26.Which is closest to 4506 ÷ 49? (a) 180 (b) 90 (c) 45 (d) 900
27. 27.Which is closest to 401 × 30? (Round each number first.) (a) 24000 (b) 12000 (c) 120000 (d) 1200
28. 28.Which is closest to 1496 ÷ 31? (a) 25 (b) 500 (c) 50 (d) 100
29. 29.Which is closest to 993 ÷ 21? (a) 50 (b) 500 (c) 100 (d) 25
30. 30.Round 63314 to the nearest thousand.
31. 31.Round 88.11 to one decimal place. =
32. 32.Which is closest to 502 × 40? (Round each number first.) (a) 200000 (b) 2000 (c) 20000 (d) 40000
33. 33.Which is closest to 197 × 60? (Round each number first.) (a) 120000 (b) 1200 (c) 24000 (d) 12000
34. 34.Which is closest to 296 + 202 + 405? (a) 800 (b) 1100 (c) 1000 (d) 900
35. 35.Which is closest to 904 + 503 + 895? (a) 2500 (b) 2400 (c) 2200 (d) 2300
36. 36.Which is closest to 696 × 42? (Round each number first.) (a) 2800 (b) 280000 (c) 56000 (d) 28000
37. 37.Which is closest to 602 × 38? (Round each number first.) (a) 24000 (b) 48000 (c) 2400 (d) 240000
38. 38.Round 76.09 to one decimal place. =
39. 39.Which is closest to 1606 ÷ 21? (a) 160 (b) 40 (c) 80 (d) 800
40. 40.Which is closest to 991 ÷ 19? (a) 100 (b) 500 (c) 50 (d) 25

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude