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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 442 · 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. 1.11 × 29 =
  2. 2.6 × 29 =
  3. 3.5 × 98 =
  4. 4.14 × 49 =
  5. 5.15 × 9 =
  6. 6.10 × 9 =
  7. 7.13 × 9 =
  8. 8.5 × 29 =
  9. 9.15 × 49 =
  10. 10.5 × 49 =
  11. 11.33 × 98 =
  12. 12.24 × 98 =
  13. 13.7 × 29 =
  14. 14.5 × 19 =
  15. 15.35 × 99 =
  16. 16.4 × 29 =
  17. 17.7 × 98 =
  18. 18.31 × 99 =
  19. 19.4 × 98 =
  20. 20.3 × 49 =
  21. 21.10 × 29 =
  22. 22.6 × 19 =
  23. 23.39 × 99 =
  24. 24.14 × 19 =
  25. 25.4 × 29 =
  26. 26.14 × 99 =
  27. 27.11 × 29 =
  28. 28.7 × 29 =
  29. 29.14 × 9 =
  30. 30.3 × 29 =
  31. 31.11 × 9 =
  32. 32.10 × 19 =
  33. 33.9 × 49 =
  34. 34.4 × 29 =
  35. 35.13 × 9 =
  36. 36.24 × 98 =
  37. 37.14 × 19 =
  38. 38.11 × 19 =
  39. 39.15 × 19 =
  40. 40.7 × 9 =

Answer key

  1. 319
  2. 174
  3. 490
  4. 686
  5. 135
  6. 90
  7. 117
  8. 145
  9. 735
  10. 245
  11. 3234
  12. 2352
  13. 203
  14. 95
  15. 3465
  16. 116
  17. 686
  18. 3069
  19. 392
  20. 147
  21. 290
  22. 114
  23. 3861
  24. 266
  25. 116
  26. 1386
  27. 319
  28. 203
  29. 126
  30. 87
  31. 99
  32. 190
  33. 441
  34. 116
  35. 117
  36. 2352
  37. 266
  38. 209
  39. 285
  40. 63

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