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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 610 · 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 × 19 =
  2. 2.9 × 29 =
  3. 3.15 × 29 =
  4. 4.9 × 29 =
  5. 5.6 × 29 =
  6. 6.6 × 19 =
  7. 7.5 × 19 =
  8. 8.29 × 98 =
  9. 9.4 × 9 =
  10. 10.40 × 98 =
  11. 11.26 × 99 =
  12. 12.13 × 19 =
  13. 13.6 × 9 =
  14. 14.13 × 9 =
  15. 15.28 × 98 =
  16. 16.7 × 9 =
  17. 17.4 × 29 =
  18. 18.12 × 49 =
  19. 19.12 × 49 =
  20. 20.25 × 99 =
  21. 21.4 × 29 =
  22. 22.4 × 29 =
  23. 23.3 × 29 =
  24. 24.4 × 19 =
  25. 25.14 × 29 =
  26. 26.11 × 49 =
  27. 27.12 × 9 =
  28. 28.5 × 49 =
  29. 29.8 × 19 =
  30. 30.7 × 29 =
  31. 31.4 × 99 =
  32. 32.3 × 19 =
  33. 33.14 × 49 =
  34. 34.11 × 49 =
  35. 35.3 × 49 =
  36. 36.12 × 49 =
  37. 37.4 × 29 =
  38. 38.24 × 99 =
  39. 39.5 × 19 =
  40. 40.13 × 49 =

Answer key

  1. 76
  2. 261
  3. 435
  4. 261
  5. 174
  6. 114
  7. 95
  8. 2842
  9. 36
  10. 3920
  11. 2574
  12. 247
  13. 54
  14. 117
  15. 2744
  16. 63
  17. 116
  18. 588
  19. 588
  20. 2475
  21. 116
  22. 116
  23. 87
  24. 76
  25. 406
  26. 539
  27. 108
  28. 245
  29. 152
  30. 203
  31. 396
  32. 57
  33. 686
  34. 539
  35. 147
  36. 588
  37. 116
  38. 2376
  39. 95
  40. 637

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