← Approximation and estimation lesson New set →

Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 548 · 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 13.74 to one decimal place. =
  2. 2.Which is closest to 1794 ÷ 19? (a) 45 (b) 180 (c) 90 (d) 900
  3. 3.Which is closest to 201 × 59? (Round each number first.) (a) 120000 (b) 24000 (c) 1200 (d) 12000
  4. 4.Which is closest to 3602 ÷ 39? (a) 900 (b) 180 (c) 90 (d) 45
  5. 5.Which is closest to 391 ÷ 19? (a) 200 (b) 40 (c) 20 (d) 10
  6. 6.Which is closest to 608 ÷ 19? (a) 60 (b) 15 (c) 300 (d) 30
  7. 7.Which is closest to 893 ÷ 31? (a) 60 (b) 300 (c) 30 (d) 15
  8. 8.Round 36654 to the nearest thousand.
  9. 9.Which is closest to 696 + 604 + 97? (a) 1300 (b) 1600 (c) 1400 (d) 1500
  10. 10.Round 11334 to the nearest hundred.
  11. 11.Round 98.72 to one decimal place. =
  12. 12.Which is closest to 1499 ÷ 49? (a) 300 (b) 30 (c) 15 (d) 60
  13. 13.Round 42.18 to one decimal place. =
  14. 14.Round 29633 to the nearest hundred.
  15. 15.Which is closest to 399 + 697 + 395? (a) 1700 (b) 1500 (c) 1600 (d) 1400
  16. 16.Round 57298 to the nearest thousand.
  17. 17.Round 16.59 to one decimal place. =
  18. 18.Which is closest to 201 × 31? (Round each number first.) (a) 60000 (b) 12000 (c) 600 (d) 6000
  19. 19.Which is closest to 896 ÷ 31? (a) 30 (b) 300 (c) 60 (d) 15
  20. 20.Round 18.46 to one decimal place. =
  21. 21.Round 52742 to the nearest thousand.
  22. 22.Which is closest to 2098 ÷ 29? (a) 140 (b) 35 (c) 70 (d) 700
  23. 23.Which is closest to 196 + 897 + 398? (a) 1700 (b) 1400 (c) 1600 (d) 1500
  24. 24.Round 31506 to the nearest ten.
  25. 25.Which is closest to 801 ÷ 39? (a) 10 (b) 200 (c) 20 (d) 40
  26. 26.Round 57253 to the nearest ten.
  27. 27.Which is closest to 498 × 58? (Round each number first.) (a) 60000 (b) 3000 (c) 30000 (d) 300000
  28. 28.Which is closest to 898 × 91? (Round each number first.) (a) 810000 (b) 162000 (c) 8100 (d) 81000
  29. 29.Round 72148 to the nearest ten.
  30. 30.Round 21110 to the nearest hundred.
  31. 31.Which is closest to 405 + 601 + 800? (a) 1900 (b) 2000 (c) 1700 (d) 1800
  32. 32.Which is closest to 499 + 505 + 702? (a) 1900 (b) 1800 (c) 1600 (d) 1700
  33. 33.Round 51.18 to one decimal place. =
  34. 34.Which is closest to 1805 ÷ 31? (a) 600 (b) 30 (c) 120 (d) 60
  35. 35.Round 92775 to the nearest hundred.
  36. 36.Which is closest to 701 × 30? (Round each number first.) (a) 210000 (b) 2100 (c) 42000 (d) 21000
  37. 37.Which is closest to 501 × 71? (Round each number first.) (a) 350000 (b) 35000 (c) 3500 (d) 70000
  38. 38.Which is closest to 1197 ÷ 31? (a) 400 (b) 80 (c) 40 (d) 20
  39. 39.Round 40113 to the nearest thousand.
  40. 40.Round 43.77 to one decimal place. =

Answer key

  1. 13.7
  2. 90
  3. 12000
  4. 90
  5. 20
  6. 30
  7. 30
  8. 37000
  9. 1400
  10. 11300
  11. 98.7
  12. 30
  13. 42.2
  14. 29600
  15. 1500
  16. 57000
  17. 16.6
  18. 6000
  19. 30
  20. 18.5
  21. 53000
  22. 70
  23. 1500
  24. 31510
  25. 20
  26. 57250
  27. 30000
  28. 81000
  29. 72150
  30. 21100
  31. 1800
  32. 1700
  33. 51.2
  34. 60
  35. 92800
  36. 21000
  37. 35000
  38. 40
  39. 40000
  40. 43.8

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