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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 776 · 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. 1.6 × 98 =
  2. 2.9 × 49 =
  3. 3.21 × 99 =
  4. 4.5 × 19 =
  5. 5.3 × 9 =
  6. 6.7 × 49 =
  7. 7.9 × 19 =
  8. 8.3 × 9 =
  9. 9.22 × 99 =
  10. 10.17 × 98 =
  11. 11.32 × 98 =
  12. 12.4 × 9 =
  13. 13.16 × 98 =
  14. 14.11 × 98 =
  15. 15.28 × 98 =
  16. 16.15 × 49 =
  17. 17.40 × 98 =
  18. 18.30 × 99 =
  19. 19.6 × 19 =
  20. 20.4 × 29 =
  21. 21.13 × 49 =
  22. 22.14 × 9 =
  23. 23.3 × 49 =
  24. 24.8 × 29 =
  25. 25.5 × 9 =
  26. 26.18 × 98 =
  27. 27.4 × 9 =
  28. 28.4 × 49 =
  29. 29.29 × 99 =
  30. 30.8 × 29 =
  31. 31.34 × 98 =
  32. 32.15 × 9 =
  33. 33.13 × 19 =
  34. 34.3 × 49 =
  35. 35.4 × 9 =
  36. 36.15 × 9 =
  37. 37.3 × 9 =
  38. 38.14 × 49 =
  39. 39.15 × 29 =
  40. 40.3 × 98 =

Answer key

  1. 588
  2. 441
  3. 2079
  4. 95
  5. 27
  6. 343
  7. 171
  8. 27
  9. 2178
  10. 1666
  11. 3136
  12. 36
  13. 1568
  14. 1078
  15. 2744
  16. 735
  17. 3920
  18. 2970
  19. 114
  20. 116
  21. 637
  22. 126
  23. 147
  24. 232
  25. 45
  26. 1764
  27. 36
  28. 196
  29. 2871
  30. 232
  31. 3332
  32. 135
  33. 247
  34. 147
  35. 36
  36. 135
  37. 27
  38. 686
  39. 435
  40. 294

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