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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 326 · 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. 1.3 × 9 =
  2. 2.13 × 9 =
  3. 3.9 × 19 =
  4. 4.4 × 98 =
  5. 5.19 × 99 =
  6. 6.8 × 19 =
  7. 7.30 × 99 =
  8. 8.6 × 49 =
  9. 9.13 × 29 =
  10. 10.15 × 19 =
  11. 11.6 × 49 =
  12. 12.6 × 98 =
  13. 13.3 × 49 =
  14. 14.5 × 9 =
  15. 15.9 × 19 =
  16. 16.5 × 99 =
  17. 17.36 × 98 =
  18. 18.10 × 49 =
  19. 19.8 × 9 =
  20. 20.6 × 19 =
  21. 21.8 × 49 =
  22. 22.16 × 98 =
  23. 23.10 × 49 =
  24. 24.11 × 19 =
  25. 25.15 × 9 =
  26. 26.10 × 99 =
  27. 27.4 × 9 =
  28. 28.38 × 98 =
  29. 29.11 × 19 =
  30. 30.10 × 49 =
  31. 31.13 × 49 =
  32. 32.15 × 19 =
  33. 33.37 × 99 =
  34. 34.5 × 9 =
  35. 35.9 × 98 =
  36. 36.36 × 98 =
  37. 37.7 × 9 =
  38. 38.6 × 49 =
  39. 39.11 × 19 =
  40. 40.8 × 49 =

Answer key

  1. 27
  2. 117
  3. 171
  4. 392
  5. 1881
  6. 152
  7. 2970
  8. 294
  9. 377
  10. 285
  11. 294
  12. 588
  13. 147
  14. 45
  15. 171
  16. 495
  17. 3528
  18. 490
  19. 72
  20. 114
  21. 392
  22. 1568
  23. 490
  24. 209
  25. 135
  26. 990
  27. 36
  28. 3724
  29. 209
  30. 490
  31. 637
  32. 285
  33. 3663
  34. 45
  35. 882
  36. 3528
  37. 63
  38. 294
  39. 209
  40. 392

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