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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 353 · 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 × 98 =
  2. 2.6 × 19 =
  3. 3.8 × 98 =
  4. 4.14 × 49 =
  5. 5.29 × 98 =
  6. 6.8 × 49 =
  7. 7.32 × 98 =
  8. 8.13 × 19 =
  9. 9.11 × 9 =
  10. 10.3 × 19 =
  11. 11.5 × 49 =
  12. 12.29 × 98 =
  13. 13.14 × 19 =
  14. 14.9 × 9 =
  15. 15.29 × 98 =
  16. 16.3 × 49 =
  17. 17.4 × 9 =
  18. 18.20 × 98 =
  19. 19.15 × 29 =
  20. 20.32 × 98 =
  21. 21.40 × 98 =
  22. 22.23 × 99 =
  23. 23.5 × 19 =
  24. 24.6 × 19 =
  25. 25.4 × 9 =
  26. 26.6 × 99 =
  27. 27.8 × 49 =
  28. 28.9 × 49 =
  29. 29.14 × 49 =
  30. 30.9 × 98 =
  31. 31.6 × 19 =
  32. 32.5 × 29 =
  33. 33.10 × 9 =
  34. 34.4 × 9 =
  35. 35.12 × 9 =
  36. 36.5 × 29 =
  37. 37.4 × 19 =
  38. 38.9 × 9 =
  39. 39.13 × 49 =
  40. 40.12 × 49 =

Answer key

  1. 1078
  2. 114
  3. 784
  4. 686
  5. 2842
  6. 392
  7. 3136
  8. 247
  9. 99
  10. 57
  11. 245
  12. 2842
  13. 266
  14. 81
  15. 2842
  16. 147
  17. 36
  18. 1960
  19. 435
  20. 3136
  21. 3920
  22. 2277
  23. 95
  24. 114
  25. 36
  26. 594
  27. 392
  28. 441
  29. 686
  30. 882
  31. 114
  32. 145
  33. 90
  34. 36
  35. 108
  36. 145
  37. 76
  38. 81
  39. 637
  40. 588

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