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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 197 · 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. 1.9 × 98 =
  2. 2.3 × 19 =
  3. 3.37 × 98 =
  4. 4.5 × 29 =
  5. 5.4 × 99 =
  6. 6.23 × 98 =
  7. 7.13 × 29 =
  8. 8.15 × 9 =
  9. 9.29 × 99 =
  10. 10.10 × 49 =
  11. 11.25 × 99 =
  12. 12.11 × 49 =
  13. 13.7 × 9 =
  14. 14.7 × 19 =
  15. 15.3 × 9 =
  16. 16.9 × 49 =
  17. 17.6 × 19 =
  18. 18.11 × 9 =
  19. 19.8 × 49 =
  20. 20.25 × 98 =
  21. 21.12 × 49 =
  22. 22.11 × 19 =
  23. 23.26 × 98 =
  24. 24.4 × 49 =
  25. 25.4 × 29 =
  26. 26.7 × 19 =
  27. 27.15 × 49 =
  28. 28.3 × 99 =
  29. 29.15 × 19 =
  30. 30.9 × 19 =
  31. 31.4 × 9 =
  32. 32.19 × 98 =
  33. 33.11 × 49 =
  34. 34.9 × 9 =
  35. 35.6 × 9 =
  36. 36.3 × 49 =
  37. 37.38 × 98 =
  38. 38.13 × 9 =
  39. 39.39 × 99 =
  40. 40.7 × 9 =

Answer key

  1. 882
  2. 57
  3. 3626
  4. 145
  5. 396
  6. 2254
  7. 377
  8. 135
  9. 2871
  10. 490
  11. 2475
  12. 539
  13. 63
  14. 133
  15. 27
  16. 441
  17. 114
  18. 99
  19. 392
  20. 2450
  21. 588
  22. 209
  23. 2548
  24. 196
  25. 116
  26. 133
  27. 735
  28. 297
  29. 285
  30. 171
  31. 36
  32. 1862
  33. 539
  34. 81
  35. 54
  36. 147
  37. 3724
  38. 117
  39. 3861
  40. 63

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