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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 471 · 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. 1.27 × 99 =
  2. 2.9 × 29 =
  3. 3.10 × 49 =
  4. 4.8 × 29 =
  5. 5.4 × 9 =
  6. 6.27 × 98 =
  7. 7.14 × 19 =
  8. 8.4 × 19 =
  9. 9.8 × 29 =
  10. 10.15 × 9 =
  11. 11.12 × 98 =
  12. 12.11 × 19 =
  13. 13.3 × 9 =
  14. 14.5 × 29 =
  15. 15.13 × 29 =
  16. 16.4 × 19 =
  17. 17.15 × 49 =
  18. 18.3 × 29 =
  19. 19.13 × 49 =
  20. 20.6 × 9 =
  21. 21.31 × 99 =
  22. 22.13 × 9 =
  23. 23.12 × 29 =
  24. 24.13 × 9 =
  25. 25.29 × 99 =
  26. 26.15 × 9 =
  27. 27.3 × 9 =
  28. 28.5 × 29 =
  29. 29.8 × 9 =
  30. 30.6 × 49 =
  31. 31.9 × 49 =
  32. 32.29 × 98 =
  33. 33.10 × 29 =
  34. 34.8 × 19 =
  35. 35.13 × 9 =
  36. 36.6 × 29 =
  37. 37.21 × 98 =
  38. 38.8 × 29 =
  39. 39.23 × 99 =
  40. 40.12 × 98 =

Answer key

  1. 2673
  2. 261
  3. 490
  4. 232
  5. 36
  6. 2646
  7. 266
  8. 76
  9. 232
  10. 135
  11. 1176
  12. 209
  13. 27
  14. 145
  15. 377
  16. 76
  17. 735
  18. 87
  19. 637
  20. 54
  21. 3069
  22. 117
  23. 348
  24. 117
  25. 2871
  26. 135
  27. 27
  28. 145
  29. 72
  30. 294
  31. 441
  32. 2842
  33. 290
  34. 152
  35. 117
  36. 174
  37. 2058
  38. 232
  39. 2277
  40. 1176

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