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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 826 · 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. 1.7 × 9 =
  2. 2.9 × 99 =
  3. 3.6 × 9 =
  4. 4.36 × 99 =
  5. 5.10 × 19 =
  6. 6.12 × 9 =
  7. 7.15 × 9 =
  8. 8.26 × 99 =
  9. 9.15 × 9 =
  10. 10.7 × 99 =
  11. 11.10 × 9 =
  12. 12.4 × 9 =
  13. 13.6 × 9 =
  14. 14.5 × 99 =
  15. 15.3 × 9 =
  16. 16.8 × 19 =
  17. 17.39 × 99 =
  18. 18.6 × 19 =
  19. 19.25 × 98 =
  20. 20.4 × 9 =
  21. 21.12 × 49 =
  22. 22.6 × 9 =
  23. 23.12 × 99 =
  24. 24.9 × 9 =
  25. 25.9 × 19 =
  26. 26.12 × 19 =
  27. 27.8 × 19 =
  28. 28.8 × 19 =
  29. 29.35 × 98 =
  30. 30.14 × 9 =
  31. 31.20 × 98 =
  32. 32.19 × 99 =
  33. 33.10 × 9 =
  34. 34.3 × 19 =
  35. 35.5 × 29 =
  36. 36.8 × 9 =
  37. 37.14 × 19 =
  38. 38.15 × 29 =
  39. 39.4 × 19 =
  40. 40.7 × 29 =

Answer key

  1. 63
  2. 891
  3. 54
  4. 3564
  5. 190
  6. 108
  7. 135
  8. 2574
  9. 135
  10. 693
  11. 90
  12. 36
  13. 54
  14. 495
  15. 27
  16. 152
  17. 3861
  18. 114
  19. 2450
  20. 36
  21. 588
  22. 54
  23. 1188
  24. 81
  25. 171
  26. 228
  27. 152
  28. 152
  29. 3430
  30. 126
  31. 1960
  32. 1881
  33. 90
  34. 57
  35. 145
  36. 72
  37. 266
  38. 435
  39. 76
  40. 203

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