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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 227 · 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. 1.5 × 49 =
  2. 2.8 × 9 =
  3. 3.15 × 19 =
  4. 4.13 × 29 =
  5. 5.27 × 98 =
  6. 6.15 × 29 =
  7. 7.13 × 29 =
  8. 8.11 × 29 =
  9. 9.37 × 99 =
  10. 10.3 × 49 =
  11. 11.14 × 9 =
  12. 12.4 × 9 =
  13. 13.17 × 99 =
  14. 14.14 × 49 =
  15. 15.4 × 29 =
  16. 16.9 × 98 =
  17. 17.11 × 98 =
  18. 18.7 × 29 =
  19. 19.12 × 49 =
  20. 20.23 × 98 =
  21. 21.4 × 29 =
  22. 22.13 × 9 =
  23. 23.26 × 99 =
  24. 24.14 × 49 =
  25. 25.24 × 98 =
  26. 26.6 × 29 =
  27. 27.28 × 98 =
  28. 28.18 × 98 =
  29. 29.6 × 9 =
  30. 30.15 × 29 =
  31. 31.13 × 9 =
  32. 32.6 × 99 =
  33. 33.13 × 29 =
  34. 34.4 × 98 =
  35. 35.8 × 49 =
  36. 36.4 × 99 =
  37. 37.8 × 29 =
  38. 38.36 × 99 =
  39. 39.9 × 98 =
  40. 40.13 × 19 =

Answer key

  1. 245
  2. 72
  3. 285
  4. 377
  5. 2646
  6. 435
  7. 377
  8. 319
  9. 3663
  10. 147
  11. 126
  12. 36
  13. 1683
  14. 686
  15. 116
  16. 882
  17. 1078
  18. 203
  19. 588
  20. 2254
  21. 116
  22. 117
  23. 2574
  24. 686
  25. 2352
  26. 174
  27. 2744
  28. 1764
  29. 54
  30. 435
  31. 117
  32. 594
  33. 377
  34. 392
  35. 392
  36. 396
  37. 232
  38. 3564
  39. 882
  40. 247

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