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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 832 · 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 × 9 =
  2. 2.25 × 98 =
  3. 3.12 × 49 =
  4. 4.15 × 29 =
  5. 5.11 × 98 =
  6. 6.15 × 19 =
  7. 7.11 × 49 =
  8. 8.14 × 29 =
  9. 9.12 × 29 =
  10. 10.15 × 98 =
  11. 11.10 × 19 =
  12. 12.7 × 98 =
  13. 13.5 × 29 =
  14. 14.34 × 99 =
  15. 15.14 × 9 =
  16. 16.12 × 9 =
  17. 17.13 × 9 =
  18. 18.7 × 19 =
  19. 19.23 × 98 =
  20. 20.8 × 29 =
  21. 21.4 × 9 =
  22. 22.4 × 98 =
  23. 23.9 × 49 =
  24. 24.3 × 29 =
  25. 25.10 × 19 =
  26. 26.8 × 9 =
  27. 27.5 × 49 =
  28. 28.7 × 19 =
  29. 29.15 × 9 =
  30. 30.12 × 9 =
  31. 31.6 × 29 =
  32. 32.8 × 19 =
  33. 33.21 × 98 =
  34. 34.15 × 19 =
  35. 35.13 × 99 =
  36. 36.10 × 29 =
  37. 37.25 × 98 =
  38. 38.3 × 49 =
  39. 39.21 × 98 =
  40. 40.8 × 29 =

Answer key

  1. 117
  2. 2450
  3. 588
  4. 435
  5. 1078
  6. 285
  7. 539
  8. 406
  9. 348
  10. 1470
  11. 190
  12. 686
  13. 145
  14. 3366
  15. 126
  16. 108
  17. 117
  18. 133
  19. 2254
  20. 232
  21. 36
  22. 392
  23. 441
  24. 87
  25. 190
  26. 72
  27. 245
  28. 133
  29. 135
  30. 108
  31. 174
  32. 152
  33. 2058
  34. 285
  35. 1287
  36. 290
  37. 2450
  38. 147
  39. 2058
  40. 232

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