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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 835 · 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. 1.4 × 9 =
  2. 2.6 × 9 =
  3. 3.21 × 99 =
  4. 4.12 × 9 =
  5. 5.30 × 99 =
  6. 6.9 × 9 =
  7. 7.15 × 19 =
  8. 8.5 × 19 =
  9. 9.5 × 49 =
  10. 10.24 × 98 =
  11. 11.6 × 9 =
  12. 12.12 × 49 =
  13. 13.5 × 9 =
  14. 14.15 × 19 =
  15. 15.3 × 29 =
  16. 16.5 × 19 =
  17. 17.12 × 29 =
  18. 18.6 × 9 =
  19. 19.4 × 29 =
  20. 20.20 × 98 =
  21. 21.15 × 99 =
  22. 22.3 × 29 =
  23. 23.36 × 98 =
  24. 24.6 × 29 =
  25. 25.32 × 98 =
  26. 26.4 × 19 =
  27. 27.15 × 9 =
  28. 28.15 × 49 =
  29. 29.6 × 29 =
  30. 30.10 × 49 =
  31. 31.39 × 99 =
  32. 32.4 × 19 =
  33. 33.14 × 19 =
  34. 34.10 × 49 =
  35. 35.14 × 19 =
  36. 36.10 × 29 =
  37. 37.15 × 98 =
  38. 38.27 × 98 =
  39. 39.31 × 99 =
  40. 40.6 × 9 =

Answer key

  1. 36
  2. 54
  3. 2079
  4. 108
  5. 2970
  6. 81
  7. 285
  8. 95
  9. 245
  10. 2352
  11. 54
  12. 588
  13. 45
  14. 285
  15. 87
  16. 95
  17. 348
  18. 54
  19. 116
  20. 1960
  21. 1485
  22. 87
  23. 3528
  24. 174
  25. 3136
  26. 76
  27. 135
  28. 735
  29. 174
  30. 490
  31. 3861
  32. 76
  33. 266
  34. 490
  35. 266
  36. 290
  37. 1470
  38. 2646
  39. 3069
  40. 54

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