← Approximation and estimation lesson New set →

Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 432 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.Round 4291 to the nearest thousand.
  2. 2.Round 5271 to the nearest hundred.
  3. 3.Which is closest to 3496 ÷ 49? (a) 140 (b) 35 (c) 700 (d) 70
  4. 4.Which is closest to 103 + 598 + 104? (a) 700 (b) 800 (c) 1000 (d) 900
  5. 5.Which is closest to 2496 ÷ 49? (a) 50 (b) 500 (c) 25 (d) 100
  6. 6.Which is closest to 2092 ÷ 31? (a) 35 (b) 700 (c) 140 (d) 70
  7. 7.Which is closest to 603 + 503 + 305? (a) 1300 (b) 1400 (c) 1600 (d) 1500
  8. 8.Which is closest to 1604 ÷ 21? (a) 800 (b) 40 (c) 80 (d) 160
  9. 9.Which is closest to 199 × 70? (Round each number first.) (a) 28000 (b) 1400 (c) 140000 (d) 14000
  10. 10.Round 81016 to the nearest ten.
  11. 11.Which is closest to 796 ÷ 19? (a) 20 (b) 400 (c) 40 (d) 80
  12. 12.Round 17.23 to one decimal place. =
  13. 13.Which is closest to 2094 ÷ 31? (a) 35 (b) 700 (c) 140 (d) 70
  14. 14.Which is closest to 1206 ÷ 21? (a) 60 (b) 120 (c) 30 (d) 600
  15. 15.Round 2964 to the nearest ten.
  16. 16.Which is closest to 900 ÷ 31? (a) 15 (b) 60 (c) 300 (d) 30
  17. 17.Round 30.41 to one decimal place. =
  18. 18.Round 23.43 to one decimal place. =
  19. 19.Which is closest to 298 × 19? (Round each number first.) (a) 600 (b) 12000 (c) 60000 (d) 6000
  20. 20.Which is closest to 602 + 501 + 202? (a) 1400 (b) 1300 (c) 1500 (d) 1200
  21. 21.Which is closest to 4008 ÷ 49? (a) 160 (b) 80 (c) 800 (d) 40
  22. 22.Which is closest to 401 + 495 + 100? (a) 1000 (b) 900 (c) 1100 (d) 1200
  23. 23.Which is closest to 904 ÷ 31? (a) 300 (b) 15 (c) 30 (d) 60
  24. 24.Round 71.71 to one decimal place. =
  25. 25.Round 74.48 to one decimal place. =
  26. 26.Which is closest to 298 × 90? (Round each number first.) (a) 27000 (b) 54000 (c) 270000 (d) 2700
  27. 27.Which is closest to 402 × 28? (Round each number first.) (a) 120000 (b) 1200 (c) 24000 (d) 12000
  28. 28.Which is closest to 395 + 795 + 603? (a) 1800 (b) 1900 (c) 2000 (d) 1700
  29. 29.Which is closest to 798 × 42? (Round each number first.) (a) 32000 (b) 320000 (c) 3200 (d) 64000
  30. 30.Round 89183 to the nearest thousand.
  31. 31.Which is closest to 1004 ÷ 49? (a) 10 (b) 200 (c) 40 (d) 20
  32. 32.Which is closest to 404 + 397 + 701? (a) 1700 (b) 1400 (c) 1600 (d) 1500
  33. 33.Which is closest to 597 ÷ 19? (a) 30 (b) 15 (c) 300 (d) 60
  34. 34.Which is closest to 703 + 402 + 803? (a) 1800 (b) 1900 (c) 2100 (d) 2000
  35. 35.Round 18.36 to one decimal place. =
  36. 36.Which is closest to 897 ÷ 31? (a) 30 (b) 60 (c) 300 (d) 15
  37. 37.Which is closest to 395 + 597 + 904? (a) 1900 (b) 2100 (c) 1800 (d) 2000
  38. 38.Which is closest to 204 × 90? (Round each number first.) (a) 36000 (b) 1800 (c) 18000 (d) 180000
  39. 39.Which is closest to 603 + 601 + 205? (a) 1600 (b) 1400 (c) 1300 (d) 1500
  40. 40.Round 60.49 to one decimal place. =

Answer key

  1. 4000
  2. 5300
  3. 70
  4. 800
  5. 50
  6. 70
  7. 1400
  8. 80
  9. 14000
  10. 81020
  11. 40
  12. 17.2
  13. 70
  14. 60
  15. 2960
  16. 30
  17. 30.4
  18. 23.4
  19. 6000
  20. 1300
  21. 80
  22. 1000
  23. 30
  24. 71.7
  25. 74.5
  26. 27000
  27. 12000
  28. 1800
  29. 32000
  30. 89000
  31. 20
  32. 1500
  33. 30
  34. 1900
  35. 18.4
  36. 30
  37. 1900
  38. 18000
  39. 1400
  40. 60.5

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