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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 611 · 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. 1.8 × 99 =
  2. 2.22 × 98 =
  3. 3.12 × 49 =
  4. 4.38 × 99 =
  5. 5.31 × 98 =
  6. 6.13 × 19 =
  7. 7.29 × 99 =
  8. 8.4 × 49 =
  9. 9.3 × 49 =
  10. 10.10 × 19 =
  11. 11.4 × 49 =
  12. 12.5 × 99 =
  13. 13.6 × 9 =
  14. 14.13 × 29 =
  15. 15.6 × 19 =
  16. 16.14 × 19 =
  17. 17.11 × 9 =
  18. 18.26 × 99 =
  19. 19.33 × 99 =
  20. 20.10 × 19 =
  21. 21.37 × 99 =
  22. 22.10 × 9 =
  23. 23.27 × 98 =
  24. 24.12 × 29 =
  25. 25.13 × 29 =
  26. 26.8 × 19 =
  27. 27.13 × 98 =
  28. 28.4 × 49 =
  29. 29.6 × 19 =
  30. 30.15 × 98 =
  31. 31.5 × 49 =
  32. 32.15 × 29 =
  33. 33.6 × 98 =
  34. 34.10 × 9 =
  35. 35.9 × 19 =
  36. 36.5 × 9 =
  37. 37.30 × 98 =
  38. 38.9 × 9 =
  39. 39.9 × 99 =
  40. 40.11 × 29 =

Answer key

  1. 792
  2. 2156
  3. 588
  4. 3762
  5. 3038
  6. 247
  7. 2871
  8. 196
  9. 147
  10. 190
  11. 196
  12. 495
  13. 54
  14. 377
  15. 114
  16. 266
  17. 99
  18. 2574
  19. 3267
  20. 190
  21. 3663
  22. 90
  23. 2646
  24. 348
  25. 377
  26. 152
  27. 1274
  28. 196
  29. 114
  30. 1470
  31. 245
  32. 435
  33. 588
  34. 90
  35. 171
  36. 45
  37. 2940
  38. 81
  39. 891
  40. 319

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