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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 263 · 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. 1.3 × 29 =
  2. 2.7 × 29 =
  3. 3.8 × 19 =
  4. 4.5 × 19 =
  5. 5.6 × 29 =
  6. 6.6 × 9 =
  7. 7.18 × 98 =
  8. 8.7 × 19 =
  9. 9.9 × 19 =
  10. 10.5 × 9 =
  11. 11.13 × 29 =
  12. 12.8 × 99 =
  13. 13.14 × 99 =
  14. 14.22 × 98 =
  15. 15.15 × 49 =
  16. 16.10 × 9 =
  17. 17.8 × 98 =
  18. 18.5 × 9 =
  19. 19.15 × 19 =
  20. 20.4 × 19 =
  21. 21.4 × 49 =
  22. 22.33 × 99 =
  23. 23.15 × 29 =
  24. 24.4 × 49 =
  25. 25.40 × 98 =
  26. 26.14 × 29 =
  27. 27.27 × 98 =
  28. 28.5 × 19 =
  29. 29.11 × 9 =
  30. 30.7 × 29 =
  31. 31.6 × 99 =
  32. 32.15 × 98 =
  33. 33.4 × 29 =
  34. 34.11 × 99 =
  35. 35.7 × 98 =
  36. 36.11 × 49 =
  37. 37.4 × 49 =
  38. 38.3 × 19 =
  39. 39.12 × 49 =
  40. 40.9 × 49 =

Answer key

  1. 87
  2. 203
  3. 152
  4. 95
  5. 174
  6. 54
  7. 1764
  8. 133
  9. 171
  10. 45
  11. 377
  12. 792
  13. 1386
  14. 2156
  15. 735
  16. 90
  17. 784
  18. 45
  19. 285
  20. 76
  21. 196
  22. 3267
  23. 435
  24. 196
  25. 3920
  26. 406
  27. 2646
  28. 95
  29. 99
  30. 203
  31. 594
  32. 1470
  33. 116
  34. 1089
  35. 686
  36. 539
  37. 196
  38. 57
  39. 588
  40. 441

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