← Approximation and estimation lesson New set →

Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 804 · 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.Which is closest to 800 + 198 + 200? (a) 1300 (b) 1200 (c) 1100 (d) 1400
  2. 2.Which is closest to 697 × 20? (Round each number first.) (a) 14000 (b) 28000 (c) 1400 (d) 140000
  3. 3.Which is closest to 1195 ÷ 39? (a) 60 (b) 300 (c) 15 (d) 30
  4. 4.Round 26068 to the nearest hundred.
  5. 5.Which is closest to 3500 ÷ 49? (a) 140 (b) 70 (c) 700 (d) 35
  6. 6.Round 81.49 to one decimal place. =
  7. 7.Which is closest to 997 ÷ 19? (a) 25 (b) 500 (c) 50 (d) 100
  8. 8.Which is closest to 504 × 61? (Round each number first.) (a) 300000 (b) 60000 (c) 3000 (d) 30000
  9. 9.Round 42480 to the nearest thousand.
  10. 10.Which is closest to 1600 ÷ 19? (a) 40 (b) 160 (c) 80 (d) 800
  11. 11.Which is closest to 301 + 800 + 200? (a) 1400 (b) 1200 (c) 1500 (d) 1300
  12. 12.Round 67.44 to one decimal place. =
  13. 13.Round 82.72 to one decimal place. =
  14. 14.Round 7727 to the nearest thousand.
  15. 15.Round 49283 to the nearest ten.
  16. 16.Which is closest to 204 + 199 + 405? (a) 1000 (b) 700 (c) 900 (d) 800
  17. 17.Which is closest to 700 × 22? (Round each number first.) (a) 28000 (b) 1400 (c) 140000 (d) 14000
  18. 18.Which is closest to 497 × 80? (Round each number first.) (a) 40000 (b) 80000 (c) 400000 (d) 4000
  19. 19.Round 7540 to the nearest thousand.
  20. 20.Which is closest to 801 + 297 + 98? (a) 1400 (b) 1300 (c) 1200 (d) 1100
  21. 21.Which is closest to 803 × 21? (Round each number first.) (a) 1600 (b) 32000 (c) 16000 (d) 160000
  22. 22.Which is closest to 599 × 18? (Round each number first.) (a) 1200 (b) 24000 (c) 120000 (d) 12000
  23. 23.Round 33.61 to one decimal place. =
  24. 24.Round 83.66 to one decimal place. =
  25. 25.Round 28.44 to one decimal place. =
  26. 26.Which is closest to 1196 ÷ 39? (a) 15 (b) 60 (c) 300 (d) 30
  27. 27.Which is closest to 2999 ÷ 51? (a) 60 (b) 30 (c) 120 (d) 600
  28. 28.Which is closest to 1005 ÷ 49? (a) 40 (b) 200 (c) 20 (d) 10
  29. 29.Which is closest to 992 ÷ 19? (a) 50 (b) 25 (c) 500 (d) 100
  30. 30.Which is closest to 101 + 500 + 96? (a) 700 (b) 600 (c) 800 (d) 900
  31. 31.Which is closest to 2700 ÷ 31? (a) 900 (b) 180 (c) 45 (d) 90
  32. 32.Round 16391 to the nearest hundred.
  33. 33.Round 36.68 to one decimal place. =
  34. 34.Which is closest to 599 ÷ 21? (a) 60 (b) 300 (c) 30 (d) 15
  35. 35.Which is closest to 802 × 68? (Round each number first.) (a) 560000 (b) 5600 (c) 56000 (d) 112000
  36. 36.Which is closest to 202 + 298 + 100? (a) 600 (b) 700 (c) 800 (d) 500
  37. 37.Round 81.69 to one decimal place. =
  38. 38.Round 19408 to the nearest ten.
  39. 39.Which is closest to 704 + 99 + 699? (a) 1600 (b) 1400 (c) 1700 (d) 1500
  40. 40.Round 92.92 to one decimal place. =

Answer key

  1. 1200
  2. 14000
  3. 30
  4. 26100
  5. 70
  6. 81.5
  7. 50
  8. 30000
  9. 42000
  10. 80
  11. 1300
  12. 67.4
  13. 82.7
  14. 8000
  15. 49280
  16. 800
  17. 14000
  18. 40000
  19. 8000
  20. 1200
  21. 16000
  22. 12000
  23. 33.6
  24. 83.7
  25. 28.4
  26. 30
  27. 60
  28. 20
  29. 50
  30. 700
  31. 90
  32. 16400
  33. 36.7
  34. 30
  35. 56000
  36. 600
  37. 81.7
  38. 19410
  39. 1500
  40. 92.9

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