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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 416 · 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. 1.9 × 99 =
  2. 2.17 × 99 =
  3. 3.32 × 99 =
  4. 4.3 × 9 =
  5. 5.8 × 29 =
  6. 6.4 × 19 =
  7. 7.6 × 9 =
  8. 8.12 × 49 =
  9. 9.8 × 29 =
  10. 10.11 × 99 =
  11. 11.3 × 9 =
  12. 12.8 × 98 =
  13. 13.10 × 9 =
  14. 14.19 × 98 =
  15. 15.10 × 29 =
  16. 16.3 × 49 =
  17. 17.10 × 98 =
  18. 18.12 × 9 =
  19. 19.14 × 99 =
  20. 20.4 × 19 =
  21. 21.10 × 29 =
  22. 22.12 × 29 =
  23. 23.6 × 29 =
  24. 24.17 × 99 =
  25. 25.13 × 19 =
  26. 26.4 × 49 =
  27. 27.27 × 99 =
  28. 28.4 × 9 =
  29. 29.11 × 29 =
  30. 30.30 × 99 =
  31. 31.6 × 49 =
  32. 32.12 × 19 =
  33. 33.4 × 49 =
  34. 34.5 × 49 =
  35. 35.19 × 99 =
  36. 36.11 × 49 =
  37. 37.11 × 29 =
  38. 38.7 × 49 =
  39. 39.29 × 98 =
  40. 40.8 × 98 =

Answer key

  1. 891
  2. 1683
  3. 3168
  4. 27
  5. 232
  6. 76
  7. 54
  8. 588
  9. 232
  10. 1089
  11. 27
  12. 784
  13. 90
  14. 1862
  15. 290
  16. 147
  17. 980
  18. 108
  19. 1386
  20. 76
  21. 290
  22. 348
  23. 174
  24. 1683
  25. 247
  26. 196
  27. 2673
  28. 36
  29. 319
  30. 2970
  31. 294
  32. 228
  33. 196
  34. 245
  35. 1881
  36. 539
  37. 319
  38. 343
  39. 2842
  40. 784

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