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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 511 · 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. 1.13 × 49 =
  2. 2.5 × 99 =
  3. 3.34 × 99 =
  4. 4.19 × 98 =
  5. 5.8 × 99 =
  6. 6.3 × 19 =
  7. 7.9 × 19 =
  8. 8.11 × 9 =
  9. 9.27 × 98 =
  10. 10.11 × 49 =
  11. 11.3 × 99 =
  12. 12.4 × 49 =
  13. 13.12 × 9 =
  14. 14.12 × 19 =
  15. 15.3 × 29 =
  16. 16.3 × 9 =
  17. 17.4 × 99 =
  18. 18.4 × 99 =
  19. 19.8 × 19 =
  20. 20.7 × 98 =
  21. 21.7 × 49 =
  22. 22.6 × 29 =
  23. 23.37 × 99 =
  24. 24.12 × 49 =
  25. 25.14 × 49 =
  26. 26.8 × 99 =
  27. 27.15 × 29 =
  28. 28.4 × 9 =
  29. 29.13 × 49 =
  30. 30.8 × 19 =
  31. 31.3 × 9 =
  32. 32.15 × 98 =
  33. 33.12 × 49 =
  34. 34.12 × 19 =
  35. 35.6 × 49 =
  36. 36.7 × 49 =
  37. 37.8 × 98 =
  38. 38.10 × 29 =
  39. 39.31 × 98 =
  40. 40.12 × 99 =

Answer key

  1. 637
  2. 495
  3. 3366
  4. 1862
  5. 792
  6. 57
  7. 171
  8. 99
  9. 2646
  10. 539
  11. 297
  12. 196
  13. 108
  14. 228
  15. 87
  16. 27
  17. 396
  18. 396
  19. 152
  20. 686
  21. 343
  22. 174
  23. 3663
  24. 588
  25. 686
  26. 792
  27. 435
  28. 36
  29. 637
  30. 152
  31. 27
  32. 1470
  33. 588
  34. 228
  35. 294
  36. 343
  37. 784
  38. 290
  39. 3038
  40. 1188

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