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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 599 · 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. 1.14 × 29 =
  2. 2.4 × 29 =
  3. 3.39 × 98 =
  4. 4.6 × 19 =
  5. 5.13 × 99 =
  6. 6.13 × 49 =
  7. 7.27 × 98 =
  8. 8.10 × 29 =
  9. 9.10 × 19 =
  10. 10.9 × 49 =
  11. 11.7 × 9 =
  12. 12.13 × 9 =
  13. 13.10 × 29 =
  14. 14.12 × 9 =
  15. 15.15 × 49 =
  16. 16.9 × 99 =
  17. 17.13 × 19 =
  18. 18.7 × 29 =
  19. 19.5 × 19 =
  20. 20.6 × 29 =
  21. 21.19 × 99 =
  22. 22.6 × 9 =
  23. 23.4 × 99 =
  24. 24.14 × 19 =
  25. 25.15 × 19 =
  26. 26.12 × 9 =
  27. 27.5 × 9 =
  28. 28.34 × 99 =
  29. 29.7 × 29 =
  30. 30.3 × 9 =
  31. 31.3 × 99 =
  32. 32.5 × 49 =
  33. 33.3 × 29 =
  34. 34.4 × 29 =
  35. 35.14 × 9 =
  36. 36.10 × 19 =
  37. 37.10 × 49 =
  38. 38.28 × 98 =
  39. 39.6 × 49 =
  40. 40.3 × 49 =

Answer key

  1. 406
  2. 116
  3. 3822
  4. 114
  5. 1287
  6. 637
  7. 2646
  8. 290
  9. 190
  10. 441
  11. 63
  12. 117
  13. 290
  14. 108
  15. 735
  16. 891
  17. 247
  18. 203
  19. 95
  20. 174
  21. 1881
  22. 54
  23. 396
  24. 266
  25. 285
  26. 108
  27. 45
  28. 3366
  29. 203
  30. 27
  31. 297
  32. 245
  33. 87
  34. 116
  35. 126
  36. 190
  37. 490
  38. 2744
  39. 294
  40. 147

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