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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 214 · 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 × 19 =
  2. 2.3 × 49 =
  3. 3.10 × 9 =
  4. 4.7 × 19 =
  5. 5.8 × 9 =
  6. 6.9 × 99 =
  7. 7.10 × 98 =
  8. 8.9 × 29 =
  9. 9.6 × 19 =
  10. 10.40 × 98 =
  11. 11.9 × 99 =
  12. 12.6 × 49 =
  13. 13.28 × 98 =
  14. 14.6 × 9 =
  15. 15.13 × 29 =
  16. 16.3 × 49 =
  17. 17.9 × 19 =
  18. 18.34 × 98 =
  19. 19.3 × 29 =
  20. 20.8 × 29 =
  21. 21.12 × 19 =
  22. 22.3 × 98 =
  23. 23.3 × 49 =
  24. 24.15 × 9 =
  25. 25.10 × 99 =
  26. 26.18 × 99 =
  27. 27.8 × 49 =
  28. 28.39 × 99 =
  29. 29.14 × 19 =
  30. 30.11 × 98 =
  31. 31.14 × 99 =
  32. 32.14 × 9 =
  33. 33.34 × 99 =
  34. 34.5 × 19 =
  35. 35.37 × 99 =
  36. 36.10 × 49 =
  37. 37.29 × 99 =
  38. 38.7 × 49 =
  39. 39.6 × 19 =
  40. 40.22 × 99 =

Answer key

  1. 95
  2. 147
  3. 90
  4. 133
  5. 72
  6. 891
  7. 980
  8. 261
  9. 114
  10. 3920
  11. 891
  12. 294
  13. 2744
  14. 54
  15. 377
  16. 147
  17. 171
  18. 3332
  19. 87
  20. 232
  21. 228
  22. 294
  23. 147
  24. 135
  25. 990
  26. 1782
  27. 392
  28. 3861
  29. 266
  30. 1078
  31. 1386
  32. 126
  33. 3366
  34. 95
  35. 3663
  36. 490
  37. 2871
  38. 343
  39. 114
  40. 2178

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