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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 672 · 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. 1.13 × 29 =
  2. 2.3 × 9 =
  3. 3.26 × 99 =
  4. 4.7 × 98 =
  5. 5.8 × 9 =
  6. 6.19 × 99 =
  7. 7.5 × 98 =
  8. 8.14 × 19 =
  9. 9.5 × 29 =
  10. 10.4 × 9 =
  11. 11.27 × 99 =
  12. 12.26 × 99 =
  13. 13.30 × 99 =
  14. 14.13 × 98 =
  15. 15.9 × 49 =
  16. 16.13 × 29 =
  17. 17.6 × 19 =
  18. 18.3 × 29 =
  19. 19.18 × 99 =
  20. 20.7 × 29 =
  21. 21.4 × 29 =
  22. 22.14 × 98 =
  23. 23.12 × 99 =
  24. 24.3 × 19 =
  25. 25.12 × 98 =
  26. 26.8 × 49 =
  27. 27.21 × 99 =
  28. 28.4 × 29 =
  29. 29.14 × 19 =
  30. 30.9 × 99 =
  31. 31.7 × 49 =
  32. 32.14 × 49 =
  33. 33.6 × 98 =
  34. 34.12 × 29 =
  35. 35.11 × 9 =
  36. 36.5 × 49 =
  37. 37.10 × 49 =
  38. 38.23 × 98 =
  39. 39.29 × 98 =
  40. 40.5 × 29 =

Answer key

  1. 377
  2. 27
  3. 2574
  4. 686
  5. 72
  6. 1881
  7. 490
  8. 266
  9. 145
  10. 36
  11. 2673
  12. 2574
  13. 2970
  14. 1274
  15. 441
  16. 377
  17. 114
  18. 87
  19. 1782
  20. 203
  21. 116
  22. 1372
  23. 1188
  24. 57
  25. 1176
  26. 392
  27. 2079
  28. 116
  29. 266
  30. 891
  31. 343
  32. 686
  33. 588
  34. 348
  35. 99
  36. 245
  37. 490
  38. 2254
  39. 2842
  40. 145

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