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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 381 · 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. 1.9 × 29 =
  2. 2.15 × 19 =
  3. 3.28 × 98 =
  4. 4.15 × 19 =
  5. 5.11 × 19 =
  6. 6.6 × 19 =
  7. 7.9 × 9 =
  8. 8.3 × 29 =
  9. 9.6 × 19 =
  10. 10.33 × 98 =
  11. 11.12 × 9 =
  12. 12.13 × 29 =
  13. 13.3 × 49 =
  14. 14.3 × 49 =
  15. 15.13 × 29 =
  16. 16.3 × 19 =
  17. 17.5 × 9 =
  18. 18.3 × 49 =
  19. 19.6 × 19 =
  20. 20.9 × 9 =
  21. 21.34 × 99 =
  22. 22.15 × 49 =
  23. 23.38 × 99 =
  24. 24.13 × 9 =
  25. 25.5 × 9 =
  26. 26.8 × 9 =
  27. 27.26 × 98 =
  28. 28.9 × 29 =
  29. 29.11 × 19 =
  30. 30.3 × 19 =
  31. 31.37 × 98 =
  32. 32.4 × 19 =
  33. 33.14 × 19 =
  34. 34.15 × 29 =
  35. 35.6 × 29 =
  36. 36.13 × 29 =
  37. 37.3 × 19 =
  38. 38.7 × 19 =
  39. 39.32 × 98 =
  40. 40.15 × 49 =

Answer key

  1. 261
  2. 285
  3. 2744
  4. 285
  5. 209
  6. 114
  7. 81
  8. 87
  9. 114
  10. 3234
  11. 108
  12. 377
  13. 147
  14. 147
  15. 377
  16. 57
  17. 45
  18. 147
  19. 114
  20. 81
  21. 3366
  22. 735
  23. 3762
  24. 117
  25. 45
  26. 72
  27. 2548
  28. 261
  29. 209
  30. 57
  31. 3626
  32. 76
  33. 266
  34. 435
  35. 174
  36. 377
  37. 57
  38. 133
  39. 3136
  40. 735

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