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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 59 · 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 × 19 =
  2. 2.6 × 9 =
  3. 3.19 × 99 =
  4. 4.5 × 49 =
  5. 5.3 × 19 =
  6. 6.6 × 19 =
  7. 7.5 × 99 =
  8. 8.10 × 9 =
  9. 9.15 × 19 =
  10. 10.10 × 29 =
  11. 11.15 × 9 =
  12. 12.3 × 19 =
  13. 13.8 × 98 =
  14. 14.9 × 29 =
  15. 15.9 × 98 =
  16. 16.29 × 98 =
  17. 17.4 × 29 =
  18. 18.9 × 49 =
  19. 19.28 × 99 =
  20. 20.7 × 49 =
  21. 21.3 × 19 =
  22. 22.4 × 49 =
  23. 23.6 × 9 =
  24. 24.9 × 9 =
  25. 25.8 × 9 =
  26. 26.5 × 49 =
  27. 27.5 × 99 =
  28. 28.4 × 29 =
  29. 29.9 × 29 =
  30. 30.13 × 9 =
  31. 31.11 × 19 =
  32. 32.8 × 98 =
  33. 33.4 × 49 =
  34. 34.27 × 99 =
  35. 35.3 × 99 =
  36. 36.9 × 9 =
  37. 37.30 × 98 =
  38. 38.30 × 99 =
  39. 39.12 × 29 =
  40. 40.15 × 49 =

Answer key

  1. 209
  2. 54
  3. 1881
  4. 245
  5. 57
  6. 114
  7. 495
  8. 90
  9. 285
  10. 290
  11. 135
  12. 57
  13. 784
  14. 261
  15. 882
  16. 2842
  17. 116
  18. 441
  19. 2772
  20. 343
  21. 57
  22. 196
  23. 54
  24. 81
  25. 72
  26. 245
  27. 495
  28. 116
  29. 261
  30. 117
  31. 209
  32. 784
  33. 196
  34. 2673
  35. 297
  36. 81
  37. 2940
  38. 2970
  39. 348
  40. 735

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