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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 804 · 40 questions
TalentJR

How it works (Round and adjust): Round up: 49 is 50 − 1, 98 is 100 − 2. Multiply by the round number. Take away the number times the bit you added.

NameDateTime takenScore ___ / 40
  1. 1.6 × 9 =
  2. 2.4 × 19 =
  3. 3.3 × 98 =
  4. 4.6 × 19 =
  5. 5.37 × 99 =
  6. 6.20 × 98 =
  7. 7.4 × 19 =
  8. 8.7 × 19 =
  9. 9.4 × 98 =
  10. 10.5 × 29 =
  11. 11.11 × 29 =
  12. 12.9 × 19 =
  13. 13.15 × 98 =
  14. 14.4 × 9 =
  15. 15.40 × 99 =
  16. 16.9 × 49 =
  17. 17.14 × 9 =
  18. 18.14 × 29 =
  19. 19.18 × 99 =
  20. 20.9 × 99 =
  21. 21.16 × 98 =
  22. 22.3 × 49 =
  23. 23.12 × 49 =
  24. 24.10 × 98 =
  25. 25.15 × 29 =
  26. 26.6 × 98 =
  27. 27.4 × 9 =
  28. 28.20 × 99 =
  29. 29.9 × 98 =
  30. 30.17 × 98 =
  31. 31.15 × 29 =
  32. 32.9 × 49 =
  33. 33.15 × 29 =
  34. 34.3 × 29 =
  35. 35.7 × 29 =
  36. 36.10 × 9 =
  37. 37.5 × 29 =
  38. 38.11 × 9 =
  39. 39.3 × 19 =
  40. 40.13 × 29 =

Answer key

  1. 54
  2. 76
  3. 294
  4. 114
  5. 3663
  6. 1960
  7. 76
  8. 133
  9. 392
  10. 145
  11. 319
  12. 171
  13. 1470
  14. 36
  15. 3960
  16. 441
  17. 126
  18. 406
  19. 1782
  20. 891
  21. 1568
  22. 147
  23. 588
  24. 980
  25. 435
  26. 588
  27. 36
  28. 1980
  29. 882
  30. 1666
  31. 435
  32. 441
  33. 435
  34. 87
  35. 203
  36. 90
  37. 145
  38. 99
  39. 57
  40. 377

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