Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 279 · 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 58.83 to one decimal place. =
2. 2.Which is closest to 699 + 297 + 99? (a) 1100 (b) 1300 (c) 1200 (d) 1000
3. 3.Which is closest to 603 × 72? (Round each number first.) (a) 42000 (b) 4200 (c) 84000 (d) 420000
4. 4.Which is closest to 495 + 297 + 302? (a) 1200 (b) 1000 (c) 1100 (d) 1300
5. 5.Which is closest to 901 × 90? (Round each number first.) (a) 81000 (b) 810000 (c) 162000 (d) 8100
6. 6.Round 54.09 to one decimal place. =
7. 7.Round 44700 to the nearest thousand.
8. 8.Round 41739 to the nearest hundred.
9. 9.Which is closest to 699 + 396 + 100? (a) 1300 (b) 1100 (c) 1400 (d) 1200
10. 10.Round 5812 to the nearest ten.
11. 11.Which is closest to 104 + 601 + 697? (a) 1300 (b) 1600 (c) 1400 (d) 1500
12. 12.Round 82.57 to one decimal place. =
13. 13.Which is closest to 297 × 78? (Round each number first.) (a) 2400 (b) 24000 (c) 240000 (d) 48000
14. 14.Round 23.74 to one decimal place. =
15. 15.Which is closest to 402 × 30? (Round each number first.) (a) 12000 (b) 1200 (c) 120000 (d) 24000
16. 16.Which is closest to 397 × 78? (Round each number first.) (a) 64000 (b) 3200 (c) 320000 (d) 32000
17. 17.Which is closest to 103 + 300 + 299? (a) 600 (b) 800 (c) 700 (d) 900
18. 18.Which is closest to 202 + 599 + 600? (a) 1400 (b) 1300 (c) 1600 (d) 1500
19. 19.Which is closest to 196 + 195 + 295? (a) 600 (b) 700 (c) 800 (d) 900
20. 20.Which is closest to 404 + 800 + 404? (a) 1700 (b) 1800 (c) 1500 (d) 1600
21. 21.Which is closest to 802 × 79? (Round each number first.) (a) 64000 (b) 6400 (c) 640000 (d) 128000
22. 22.Which is closest to 798 × 41? (Round each number first.) (a) 3200 (b) 64000 (c) 32000 (d) 320000
23. 23.Which is closest to 900 × 31? (Round each number first.) (a) 54000 (b) 2700 (c) 27000 (d) 270000
24. 24.Round 56.81 to one decimal place. =
25. 25.Which is closest to 604 × 59? (Round each number first.) (a) 72000 (b) 360000 (c) 36000 (d) 3600
26. 26.Which is closest to 295 + 704 + 805? (a) 1800 (b) 1700 (c) 1900 (d) 2000
27. 27.Which is closest to 396 × 42? (Round each number first.) (a) 160000 (b) 32000 (c) 1600 (d) 16000
28. 28.Which is closest to 899 × 28? (Round each number first.) (a) 54000 (b) 27000 (c) 270000 (d) 2700
29. 29.Which is closest to 203 × 91? (Round each number first.) (a) 36000 (b) 180000 (c) 18000 (d) 1800
30. 30.Round 53006 to the nearest ten.
31. 31.Which is closest to 302 × 22? (Round each number first.) (a) 600 (b) 60000 (c) 12000 (d) 6000
32. 32.Which is closest to 403 × 81? (Round each number first.) (a) 3200 (b) 32000 (c) 64000 (d) 320000
33. 33.Which is closest to 3199 ÷ 39? (a) 40 (b) 800 (c) 160 (d) 80
34. 34.Which is closest to 704 × 32? (Round each number first.) (a) 2100 (b) 21000 (c) 42000 (d) 210000
35. 35.Round 96626 to the nearest ten.
36. 36.Which is closest to 3496 ÷ 51? (a) 700 (b) 140 (c) 70 (d) 35
37. 37.Which is closest to 296 × 79? (Round each number first.) (a) 2400 (b) 240000 (c) 24000 (d) 48000
38. 38.Which is closest to 603 + 905 + 95? (a) 1500 (b) 1700 (c) 1600 (d) 1800
39. 39.Which is closest to 796 × 78? (Round each number first.) (a) 640000 (b) 128000 (c) 64000 (d) 6400
40. 40.Round 95106 to the nearest thousand.

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