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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 682 · 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 × 19 =
  2. 2.9 × 19 =
  3. 3.4 × 98 =
  4. 4.10 × 9 =
  5. 5.40 × 98 =
  6. 6.9 × 29 =
  7. 7.21 × 98 =
  8. 8.15 × 29 =
  9. 9.33 × 99 =
  10. 10.7 × 9 =
  11. 11.3 × 19 =
  12. 12.29 × 98 =
  13. 13.11 × 29 =
  14. 14.14 × 19 =
  15. 15.9 × 19 =
  16. 16.3 × 29 =
  17. 17.7 × 29 =
  18. 18.4 × 19 =
  19. 19.15 × 19 =
  20. 20.3 × 19 =
  21. 21.6 × 99 =
  22. 22.29 × 99 =
  23. 23.34 × 98 =
  24. 24.14 × 98 =
  25. 25.15 × 29 =
  26. 26.5 × 19 =
  27. 27.23 × 98 =
  28. 28.6 × 99 =
  29. 29.19 × 98 =
  30. 30.14 × 19 =
  31. 31.3 × 98 =
  32. 32.13 × 49 =
  33. 33.14 × 9 =
  34. 34.8 × 98 =
  35. 35.7 × 49 =
  36. 36.3 × 49 =
  37. 37.6 × 19 =
  38. 38.7 × 9 =
  39. 39.7 × 19 =
  40. 40.4 × 9 =

Answer key

  1. 247
  2. 171
  3. 392
  4. 90
  5. 3920
  6. 261
  7. 2058
  8. 435
  9. 3267
  10. 63
  11. 57
  12. 2842
  13. 319
  14. 266
  15. 171
  16. 87
  17. 203
  18. 76
  19. 285
  20. 57
  21. 594
  22. 2871
  23. 3332
  24. 1372
  25. 435
  26. 95
  27. 2254
  28. 594
  29. 1862
  30. 266
  31. 294
  32. 637
  33. 126
  34. 784
  35. 343
  36. 147
  37. 114
  38. 63
  39. 133
  40. 36

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