← Approximation and estimation lesson New set →

Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 792 · 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 94.28 to one decimal place. =
  2. 2.Round 25.61 to one decimal place. =
  3. 3.Which is closest to 1398 ÷ 19? (a) 35 (b) 700 (c) 70 (d) 140
  4. 4.Which is closest to 2993 ÷ 51? (a) 600 (b) 120 (c) 30 (d) 60
  5. 5.Which is closest to 798 × 39? (Round each number first.) (a) 320000 (b) 32000 (c) 3200 (d) 64000
  6. 6.Which is closest to 1495 ÷ 31? (a) 500 (b) 25 (c) 100 (d) 50
  7. 7.Round 40.83 to one decimal place. =
  8. 8.Which is closest to 505 + 899 + 102? (a) 1500 (b) 1700 (c) 1400 (d) 1600
  9. 9.Which is closest to 2393 ÷ 41? (a) 600 (b) 60 (c) 120 (d) 30
  10. 10.Which is closest to 799 × 31? (Round each number first.) (a) 24000 (b) 240000 (c) 48000 (d) 2400
  11. 11.Round 3638 to the nearest hundred.
  12. 12.Round 89.87 to one decimal place. =
  13. 13.Which is closest to 200 + 701 + 199? (a) 1200 (b) 1100 (c) 1000 (d) 1300
  14. 14.Which is closest to 697 + 303 + 501? (a) 1400 (b) 1600 (c) 1700 (d) 1500
  15. 15.Which is closest to 197 × 42? (Round each number first.) (a) 16000 (b) 80000 (c) 8000 (d) 800
  16. 16.Which is closest to 703 × 49? (Round each number first.) (a) 3500 (b) 35000 (c) 350000 (d) 70000
  17. 17.Round 70.68 to one decimal place. =
  18. 18.Round 33901 to the nearest ten.
  19. 19.Round 87816 to the nearest hundred.
  20. 20.Which is closest to 301 + 96 + 299? (a) 600 (b) 700 (c) 900 (d) 800
  21. 21.Round 51087 to the nearest hundred.
  22. 22.Round 63.68 to one decimal place. =
  23. 23.Which is closest to 502 × 82? (Round each number first.) (a) 400000 (b) 4000 (c) 40000 (d) 80000
  24. 24.Which is closest to 504 + 904 + 298? (a) 1600 (b) 1800 (c) 1900 (d) 1700
  25. 25.Which is closest to 904 + 495 + 200? (a) 1700 (b) 1800 (c) 1500 (d) 1600
  26. 26.Round 47.93 to one decimal place. =
  27. 27.Which is closest to 1504 ÷ 51? (a) 30 (b) 60 (c) 15 (d) 300
  28. 28.Which is closest to 504 + 104 + 604? (a) 1300 (b) 1100 (c) 1200 (d) 1400
  29. 29.Which is closest to 305 + 704 + 405? (a) 1500 (b) 1600 (c) 1400 (d) 1300
  30. 30.Which is closest to 499 × 90? (Round each number first.) (a) 90000 (b) 450000 (c) 45000 (d) 4500
  31. 31.Which is closest to 2408 ÷ 39? (a) 600 (b) 30 (c) 60 (d) 120
  32. 32.Which is closest to 699 × 68? (Round each number first.) (a) 98000 (b) 490000 (c) 4900 (d) 49000
  33. 33.Which is closest to 504 × 42? (Round each number first.) (a) 40000 (b) 200000 (c) 2000 (d) 20000
  34. 34.Which is closest to 3192 ÷ 39? (a) 40 (b) 800 (c) 80 (d) 160
  35. 35.Round 71034 to the nearest hundred.
  36. 36.Which is closest to 405 + 299 + 601? (a) 1200 (b) 1400 (c) 1500 (d) 1300
  37. 37.Which is closest to 1192 ÷ 31? (a) 80 (b) 20 (c) 400 (d) 40
  38. 38.Round 30.56 to one decimal place. =
  39. 39.Which is closest to 2709 ÷ 29? (a) 900 (b) 45 (c) 90 (d) 180
  40. 40.Round 16076 to the nearest ten.

Answer key

  1. 94.3
  2. 25.6
  3. 70
  4. 60
  5. 32000
  6. 50
  7. 40.8
  8. 1500
  9. 60
  10. 24000
  11. 3600
  12. 89.9
  13. 1100
  14. 1500
  15. 8000
  16. 35000
  17. 70.7
  18. 33900
  19. 87800
  20. 700
  21. 51100
  22. 63.7
  23. 40000
  24. 1700
  25. 1600
  26. 47.9
  27. 30
  28. 1200
  29. 1400
  30. 45000
  31. 60
  32. 49000
  33. 20000
  34. 80
  35. 71000
  36. 1300
  37. 40
  38. 30.6
  39. 90
  40. 16080

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