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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 829 · 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. 1.15 × 19 =
  2. 2.6 × 49 =
  3. 3.34 × 99 =
  4. 4.5 × 9 =
  5. 5.13 × 99 =
  6. 6.4 × 98 =
  7. 7.27 × 98 =
  8. 8.5 × 99 =
  9. 9.15 × 9 =
  10. 10.7 × 19 =
  11. 11.5 × 29 =
  12. 12.10 × 98 =
  13. 13.10 × 98 =
  14. 14.7 × 98 =
  15. 15.38 × 99 =
  16. 16.6 × 9 =
  17. 17.9 × 99 =
  18. 18.14 × 98 =
  19. 19.10 × 29 =
  20. 20.13 × 19 =
  21. 21.30 × 99 =
  22. 22.3 × 9 =
  23. 23.6 × 19 =
  24. 24.14 × 29 =
  25. 25.13 × 29 =
  26. 26.3 × 19 =
  27. 27.10 × 29 =
  28. 28.12 × 9 =
  29. 29.5 × 9 =
  30. 30.5 × 9 =
  31. 31.12 × 9 =
  32. 32.4 × 9 =
  33. 33.14 × 19 =
  34. 34.40 × 99 =
  35. 35.5 × 29 =
  36. 36.31 × 99 =
  37. 37.3 × 19 =
  38. 38.29 × 99 =
  39. 39.5 × 19 =
  40. 40.3 × 49 =

Answer key

  1. 285
  2. 294
  3. 3366
  4. 45
  5. 1287
  6. 392
  7. 2646
  8. 495
  9. 135
  10. 133
  11. 145
  12. 980
  13. 980
  14. 686
  15. 3762
  16. 54
  17. 891
  18. 1372
  19. 290
  20. 247
  21. 2970
  22. 27
  23. 114
  24. 406
  25. 377
  26. 57
  27. 290
  28. 108
  29. 45
  30. 45
  31. 108
  32. 36
  33. 266
  34. 3960
  35. 145
  36. 3069
  37. 57
  38. 2871
  39. 95
  40. 147

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