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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 319 · 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. 1.14 × 9 =
  2. 2.9 × 99 =
  3. 3.3 × 98 =
  4. 4.7 × 19 =
  5. 5.15 × 29 =
  6. 6.13 × 9 =
  7. 7.37 × 99 =
  8. 8.7 × 9 =
  9. 9.4 × 19 =
  10. 10.5 × 98 =
  11. 11.8 × 49 =
  12. 12.8 × 9 =
  13. 13.39 × 99 =
  14. 14.5 × 19 =
  15. 15.9 × 98 =
  16. 16.5 × 9 =
  17. 17.3 × 9 =
  18. 18.6 × 49 =
  19. 19.7 × 99 =
  20. 20.13 × 29 =
  21. 21.6 × 29 =
  22. 22.6 × 19 =
  23. 23.31 × 99 =
  24. 24.4 × 9 =
  25. 25.4 × 9 =
  26. 26.13 × 19 =
  27. 27.14 × 49 =
  28. 28.35 × 99 =
  29. 29.4 × 9 =
  30. 30.14 × 9 =
  31. 31.6 × 9 =
  32. 32.8 × 49 =
  33. 33.8 × 49 =
  34. 34.3 × 19 =
  35. 35.11 × 98 =
  36. 36.7 × 49 =
  37. 37.13 × 9 =
  38. 38.25 × 99 =
  39. 39.13 × 9 =
  40. 40.23 × 99 =

Answer key

  1. 126
  2. 891
  3. 294
  4. 133
  5. 435
  6. 117
  7. 3663
  8. 63
  9. 76
  10. 490
  11. 392
  12. 72
  13. 3861
  14. 95
  15. 882
  16. 45
  17. 27
  18. 294
  19. 693
  20. 377
  21. 174
  22. 114
  23. 3069
  24. 36
  25. 36
  26. 247
  27. 686
  28. 3465
  29. 36
  30. 126
  31. 54
  32. 392
  33. 392
  34. 57
  35. 1078
  36. 343
  37. 117
  38. 2475
  39. 117
  40. 2277

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