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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 623 · 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 × 19 =
  2. 2.4 × 49 =
  3. 3.15 × 29 =
  4. 4.12 × 49 =
  5. 5.15 × 9 =
  6. 6.39 × 99 =
  7. 7.38 × 98 =
  8. 8.7 × 29 =
  9. 9.15 × 49 =
  10. 10.26 × 98 =
  11. 11.7 × 9 =
  12. 12.36 × 99 =
  13. 13.11 × 19 =
  14. 14.14 × 19 =
  15. 15.12 × 29 =
  16. 16.11 × 98 =
  17. 17.10 × 49 =
  18. 18.3 × 19 =
  19. 19.6 × 9 =
  20. 20.8 × 29 =
  21. 21.30 × 99 =
  22. 22.19 × 99 =
  23. 23.10 × 49 =
  24. 24.12 × 99 =
  25. 25.32 × 98 =
  26. 26.6 × 29 =
  27. 27.4 × 9 =
  28. 28.4 × 19 =
  29. 29.12 × 29 =
  30. 30.6 × 49 =
  31. 31.7 × 19 =
  32. 32.14 × 29 =
  33. 33.7 × 9 =
  34. 34.9 × 19 =
  35. 35.25 × 98 =
  36. 36.28 × 98 =
  37. 37.8 × 29 =
  38. 38.8 × 29 =
  39. 39.13 × 49 =
  40. 40.3 × 9 =

Answer key

  1. 57
  2. 196
  3. 435
  4. 588
  5. 135
  6. 3861
  7. 3724
  8. 203
  9. 735
  10. 2548
  11. 63
  12. 3564
  13. 209
  14. 266
  15. 348
  16. 1078
  17. 490
  18. 57
  19. 54
  20. 232
  21. 2970
  22. 1881
  23. 490
  24. 1188
  25. 3136
  26. 174
  27. 36
  28. 76
  29. 348
  30. 294
  31. 133
  32. 406
  33. 63
  34. 171
  35. 2450
  36. 2744
  37. 232
  38. 232
  39. 637
  40. 27

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