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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 627 · 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 × 9 =
  2. 2.3 × 9 =
  3. 3.12 × 9 =
  4. 4.5 × 19 =
  5. 5.3 × 29 =
  6. 6.8 × 98 =
  7. 7.8 × 29 =
  8. 8.15 × 29 =
  9. 9.14 × 99 =
  10. 10.13 × 19 =
  11. 11.8 × 9 =
  12. 12.5 × 9 =
  13. 13.13 × 49 =
  14. 14.37 × 98 =
  15. 15.34 × 99 =
  16. 16.31 × 99 =
  17. 17.3 × 19 =
  18. 18.12 × 9 =
  19. 19.15 × 9 =
  20. 20.12 × 9 =
  21. 21.10 × 99 =
  22. 22.35 × 99 =
  23. 23.11 × 19 =
  24. 24.33 × 99 =
  25. 25.4 × 29 =
  26. 26.14 × 9 =
  27. 27.11 × 19 =
  28. 28.10 × 19 =
  29. 29.18 × 99 =
  30. 30.12 × 29 =
  31. 31.3 × 99 =
  32. 32.9 × 19 =
  33. 33.30 × 98 =
  34. 34.6 × 29 =
  35. 35.13 × 49 =
  36. 36.13 × 29 =
  37. 37.19 × 99 =
  38. 38.5 × 19 =
  39. 39.14 × 9 =
  40. 40.8 × 49 =

Answer key

  1. 126
  2. 27
  3. 108
  4. 95
  5. 87
  6. 784
  7. 232
  8. 435
  9. 1386
  10. 247
  11. 72
  12. 45
  13. 637
  14. 3626
  15. 3366
  16. 3069
  17. 57
  18. 108
  19. 135
  20. 108
  21. 990
  22. 3465
  23. 209
  24. 3267
  25. 116
  26. 126
  27. 209
  28. 190
  29. 1782
  30. 348
  31. 297
  32. 171
  33. 2940
  34. 174
  35. 637
  36. 377
  37. 1881
  38. 95
  39. 126
  40. 392

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