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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 123 · 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 × 29 =
  2. 2.8 × 29 =
  3. 3.15 × 19 =
  4. 4.13 × 29 =
  5. 5.11 × 19 =
  6. 6.22 × 98 =
  7. 7.10 × 49 =
  8. 8.30 × 98 =
  9. 9.27 × 99 =
  10. 10.4 × 49 =
  11. 11.8 × 19 =
  12. 12.6 × 9 =
  13. 13.3 × 19 =
  14. 14.12 × 29 =
  15. 15.8 × 19 =
  16. 16.6 × 9 =
  17. 17.13 × 29 =
  18. 18.4 × 9 =
  19. 19.13 × 9 =
  20. 20.10 × 9 =
  21. 21.27 × 98 =
  22. 22.7 × 19 =
  23. 23.7 × 99 =
  24. 24.11 × 19 =
  25. 25.30 × 99 =
  26. 26.19 × 98 =
  27. 27.9 × 9 =
  28. 28.29 × 98 =
  29. 29.7 × 98 =
  30. 30.4 × 9 =
  31. 31.9 × 29 =
  32. 32.7 × 19 =
  33. 33.4 × 49 =
  34. 34.11 × 49 =
  35. 35.15 × 29 =
  36. 36.11 × 49 =
  37. 37.14 × 29 =
  38. 38.15 × 29 =
  39. 39.7 × 99 =
  40. 40.5 × 29 =

Answer key

  1. 377
  2. 232
  3. 285
  4. 377
  5. 209
  6. 2156
  7. 490
  8. 2940
  9. 2673
  10. 196
  11. 152
  12. 54
  13. 57
  14. 348
  15. 152
  16. 54
  17. 377
  18. 36
  19. 117
  20. 90
  21. 2646
  22. 133
  23. 693
  24. 209
  25. 2970
  26. 1862
  27. 81
  28. 2842
  29. 686
  30. 36
  31. 261
  32. 133
  33. 196
  34. 539
  35. 435
  36. 539
  37. 406
  38. 435
  39. 693
  40. 145

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