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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 831 · 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. 1.14 × 9 =
  2. 2.15 × 19 =
  3. 3.11 × 98 =
  4. 4.11 × 9 =
  5. 5.7 × 49 =
  6. 6.10 × 29 =
  7. 7.7 × 98 =
  8. 8.5 × 49 =
  9. 9.9 × 19 =
  10. 10.13 × 29 =
  11. 11.12 × 19 =
  12. 12.8 × 49 =
  13. 13.31 × 98 =
  14. 14.14 × 98 =
  15. 15.14 × 29 =
  16. 16.10 × 49 =
  17. 17.27 × 99 =
  18. 18.9 × 99 =
  19. 19.3 × 9 =
  20. 20.6 × 49 =
  21. 21.9 × 19 =
  22. 22.40 × 98 =
  23. 23.24 × 98 =
  24. 24.6 × 99 =
  25. 25.39 × 99 =
  26. 26.11 × 19 =
  27. 27.14 × 49 =
  28. 28.8 × 49 =
  29. 29.12 × 49 =
  30. 30.4 × 19 =
  31. 31.3 × 29 =
  32. 32.9 × 9 =
  33. 33.16 × 99 =
  34. 34.36 × 99 =
  35. 35.6 × 29 =
  36. 36.5 × 29 =
  37. 37.12 × 9 =
  38. 38.10 × 98 =
  39. 39.7 × 98 =
  40. 40.14 × 9 =

Answer key

  1. 126
  2. 285
  3. 1078
  4. 99
  5. 343
  6. 290
  7. 686
  8. 245
  9. 171
  10. 377
  11. 228
  12. 392
  13. 3038
  14. 1372
  15. 406
  16. 490
  17. 2673
  18. 891
  19. 27
  20. 294
  21. 171
  22. 3920
  23. 2352
  24. 594
  25. 3861
  26. 209
  27. 686
  28. 392
  29. 588
  30. 76
  31. 87
  32. 81
  33. 1584
  34. 3564
  35. 174
  36. 145
  37. 108
  38. 980
  39. 686
  40. 126

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