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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 719 · 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. 1.13 × 19 =
  2. 2.3 × 19 =
  3. 3.4 × 9 =
  4. 4.13 × 29 =
  5. 5.14 × 9 =
  6. 6.9 × 49 =
  7. 7.8 × 9 =
  8. 8.3 × 19 =
  9. 9.12 × 49 =
  10. 10.3 × 29 =
  11. 11.5 × 9 =
  12. 12.15 × 9 =
  13. 13.39 × 98 =
  14. 14.27 × 99 =
  15. 15.5 × 29 =
  16. 16.11 × 29 =
  17. 17.7 × 29 =
  18. 18.3 × 19 =
  19. 19.14 × 19 =
  20. 20.25 × 98 =
  21. 21.9 × 99 =
  22. 22.9 × 98 =
  23. 23.29 × 98 =
  24. 24.13 × 49 =
  25. 25.14 × 49 =
  26. 26.7 × 9 =
  27. 27.15 × 9 =
  28. 28.6 × 29 =
  29. 29.6 × 9 =
  30. 30.11 × 19 =
  31. 31.6 × 9 =
  32. 32.7 × 29 =
  33. 33.7 × 29 =
  34. 34.4 × 9 =
  35. 35.6 × 99 =
  36. 36.14 × 19 =
  37. 37.7 × 29 =
  38. 38.8 × 29 =
  39. 39.12 × 49 =
  40. 40.7 × 19 =

Answer key

  1. 247
  2. 57
  3. 36
  4. 377
  5. 126
  6. 441
  7. 72
  8. 57
  9. 588
  10. 87
  11. 45
  12. 135
  13. 3822
  14. 2673
  15. 145
  16. 319
  17. 203
  18. 57
  19. 266
  20. 2450
  21. 891
  22. 882
  23. 2842
  24. 637
  25. 686
  26. 63
  27. 135
  28. 174
  29. 54
  30. 209
  31. 54
  32. 203
  33. 203
  34. 36
  35. 594
  36. 266
  37. 203
  38. 232
  39. 588
  40. 133

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