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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 51 · 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 × 19 =
  2. 2.35 × 98 =
  3. 3.3 × 9 =
  4. 4.4 × 19 =
  5. 5.7 × 9 =
  6. 6.35 × 98 =
  7. 7.25 × 99 =
  8. 8.14 × 19 =
  9. 9.13 × 9 =
  10. 10.5 × 29 =
  11. 11.3 × 9 =
  12. 12.15 × 9 =
  13. 13.6 × 98 =
  14. 14.15 × 98 =
  15. 15.9 × 99 =
  16. 16.7 × 9 =
  17. 17.3 × 29 =
  18. 18.29 × 98 =
  19. 19.4 × 9 =
  20. 20.4 × 98 =
  21. 21.13 × 19 =
  22. 22.12 × 49 =
  23. 23.13 × 98 =
  24. 24.8 × 99 =
  25. 25.3 × 9 =
  26. 26.8 × 29 =
  27. 27.10 × 19 =
  28. 28.10 × 98 =
  29. 29.3 × 19 =
  30. 30.8 × 49 =
  31. 31.8 × 49 =
  32. 32.28 × 98 =
  33. 33.7 × 19 =
  34. 34.20 × 99 =
  35. 35.12 × 49 =
  36. 36.7 × 99 =
  37. 37.15 × 29 =
  38. 38.11 × 49 =
  39. 39.21 × 98 =
  40. 40.7 × 9 =

Answer key

  1. 114
  2. 3430
  3. 27
  4. 76
  5. 63
  6. 3430
  7. 2475
  8. 266
  9. 117
  10. 145
  11. 27
  12. 135
  13. 588
  14. 1470
  15. 891
  16. 63
  17. 87
  18. 2842
  19. 36
  20. 392
  21. 247
  22. 588
  23. 1274
  24. 792
  25. 27
  26. 232
  27. 190
  28. 980
  29. 57
  30. 392
  31. 392
  32. 2744
  33. 133
  34. 1980
  35. 588
  36. 693
  37. 435
  38. 539
  39. 2058
  40. 63

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