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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 653 · 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. 1.5 × 98 =
  2. 2.9 × 9 =
  3. 3.14 × 98 =
  4. 4.11 × 98 =
  5. 5.6 × 9 =
  6. 6.9 × 19 =
  7. 7.4 × 19 =
  8. 8.3 × 9 =
  9. 9.15 × 19 =
  10. 10.5 × 9 =
  11. 11.10 × 29 =
  12. 12.12 × 49 =
  13. 13.40 × 98 =
  14. 14.9 × 19 =
  15. 15.3 × 49 =
  16. 16.3 × 19 =
  17. 17.4 × 19 =
  18. 18.9 × 19 =
  19. 19.28 × 98 =
  20. 20.7 × 99 =
  21. 21.12 × 19 =
  22. 22.13 × 29 =
  23. 23.9 × 29 =
  24. 24.12 × 9 =
  25. 25.9 × 9 =
  26. 26.8 × 29 =
  27. 27.4 × 9 =
  28. 28.33 × 99 =
  29. 29.4 × 29 =
  30. 30.14 × 19 =
  31. 31.7 × 49 =
  32. 32.11 × 98 =
  33. 33.6 × 29 =
  34. 34.19 × 98 =
  35. 35.6 × 19 =
  36. 36.5 × 9 =
  37. 37.4 × 49 =
  38. 38.3 × 29 =
  39. 39.5 × 9 =
  40. 40.14 × 9 =

Answer key

  1. 490
  2. 81
  3. 1372
  4. 1078
  5. 54
  6. 171
  7. 76
  8. 27
  9. 285
  10. 45
  11. 290
  12. 588
  13. 3920
  14. 171
  15. 147
  16. 57
  17. 76
  18. 171
  19. 2744
  20. 693
  21. 228
  22. 377
  23. 261
  24. 108
  25. 81
  26. 232
  27. 36
  28. 3267
  29. 116
  30. 266
  31. 343
  32. 1078
  33. 174
  34. 1862
  35. 114
  36. 45
  37. 196
  38. 87
  39. 45
  40. 126

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