← Approximation and estimation lesson New set →

Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 408 · 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 58529 to the nearest ten.
  2. 2.Round 26993 to the nearest hundred.
  3. 3.Which is closest to 391 ÷ 19? (a) 20 (b) 10 (c) 200 (d) 40
  4. 4.Which is closest to 1492 ÷ 31? (a) 25 (b) 50 (c) 100 (d) 500
  5. 5.Which is closest to 202 × 28? (Round each number first.) (a) 12000 (b) 600 (c) 6000 (d) 60000
  6. 6.Which is closest to 1594 ÷ 19? (a) 40 (b) 800 (c) 160 (d) 80
  7. 7.Which is closest to 596 ÷ 21? (a) 30 (b) 15 (c) 60 (d) 300
  8. 8.Round 70.42 to one decimal place. =
  9. 9.Round 39.58 to one decimal place. =
  10. 10.Which is closest to 702 × 18? (Round each number first.) (a) 28000 (b) 14000 (c) 1400 (d) 140000
  11. 11.Which is closest to 1004 ÷ 21? (a) 25 (b) 50 (c) 500 (d) 100
  12. 12.Which is closest to 198 × 92? (Round each number first.) (a) 36000 (b) 1800 (c) 18000 (d) 180000
  13. 13.Which is closest to 200 × 68? (Round each number first.) (a) 28000 (b) 1400 (c) 14000 (d) 140000
  14. 14.Which is closest to 602 × 68? (Round each number first.) (a) 42000 (b) 4200 (c) 84000 (d) 420000
  15. 15.Which is closest to 303 + 196 + 696? (a) 1300 (b) 1200 (c) 1100 (d) 1400
  16. 16.Round 22.66 to one decimal place. =
  17. 17.Which is closest to 1207 ÷ 29? (a) 80 (b) 40 (c) 20 (d) 400
  18. 18.Round 19.58 to one decimal place. =
  19. 19.Which is closest to 801 × 18? (Round each number first.) (a) 16000 (b) 1600 (c) 160000 (d) 32000
  20. 20.Round 55.92 to one decimal place. =
  21. 21.Which is closest to 698 + 97 + 605? (a) 1500 (b) 1300 (c) 1400 (d) 1600
  22. 22.Round 66.31 to one decimal place. =
  23. 23.Which is closest to 503 × 69? (Round each number first.) (a) 35000 (b) 3500 (c) 70000 (d) 350000
  24. 24.Which is closest to 2797 ÷ 39? (a) 70 (b) 700 (c) 35 (d) 140
  25. 25.Which is closest to 704 + 204 + 899? (a) 1800 (b) 2000 (c) 1900 (d) 1700
  26. 26.Round 17.92 to one decimal place. =
  27. 27.Which is closest to 698 × 92? (Round each number first.) (a) 126000 (b) 63000 (c) 630000 (d) 6300
  28. 28.Which is closest to 697 × 19? (Round each number first.) (a) 140000 (b) 1400 (c) 28000 (d) 14000
  29. 29.Which is closest to 202 + 99 + 603? (a) 800 (b) 1000 (c) 900 (d) 1100
  30. 30.Round 70193 to the nearest thousand.
  31. 31.Which is closest to 398 × 19? (Round each number first.) (a) 80000 (b) 16000 (c) 8000 (d) 800
  32. 32.Which is closest to 295 + 497 + 895? (a) 1600 (b) 1700 (c) 1800 (d) 1900
  33. 33.Round 93479 to the nearest ten.
  34. 34.Which is closest to 2094 ÷ 31? (a) 35 (b) 700 (c) 140 (d) 70
  35. 35.Round 25968 to the nearest thousand.
  36. 36.Which is closest to 796 + 98 + 601? (a) 1700 (b) 1500 (c) 1600 (d) 1400
  37. 37.Round 71.11 to one decimal place. =
  38. 38.Which is closest to 197 × 69? (Round each number first.) (a) 140000 (b) 14000 (c) 28000 (d) 1400
  39. 39.Round 19773 to the nearest hundred.
  40. 40.Which is closest to 801 + 201 + 203? (a) 1400 (b) 1300 (c) 1200 (d) 1100

Answer key

  1. 58530
  2. 27000
  3. 20
  4. 50
  5. 6000
  6. 80
  7. 30
  8. 70.4
  9. 39.6
  10. 14000
  11. 50
  12. 18000
  13. 14000
  14. 42000
  15. 1200
  16. 22.7
  17. 40
  18. 19.6
  19. 16000
  20. 55.9
  21. 1400
  22. 66.3
  23. 35000
  24. 70
  25. 1800
  26. 17.9
  27. 63000
  28. 14000
  29. 900
  30. 70000
  31. 8000
  32. 1700
  33. 93480
  34. 70
  35. 26000
  36. 1500
  37. 71.1
  38. 14000
  39. 19800
  40. 1200

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