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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 287 · 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 × 29 =
  2. 2.12 × 98 =
  3. 3.40 × 98 =
  4. 4.18 × 98 =
  5. 5.4 × 49 =
  6. 6.9 × 19 =
  7. 7.14 × 9 =
  8. 8.6 × 29 =
  9. 9.4 × 19 =
  10. 10.4 × 29 =
  11. 11.10 × 19 =
  12. 12.11 × 49 =
  13. 13.11 × 9 =
  14. 14.35 × 99 =
  15. 15.13 × 49 =
  16. 16.4 × 19 =
  17. 17.10 × 9 =
  18. 18.17 × 99 =
  19. 19.14 × 29 =
  20. 20.4 × 19 =
  21. 21.12 × 9 =
  22. 22.7 × 29 =
  23. 23.9 × 19 =
  24. 24.14 × 29 =
  25. 25.28 × 98 =
  26. 26.5 × 29 =
  27. 27.8 × 9 =
  28. 28.9 × 19 =
  29. 29.9 × 98 =
  30. 30.6 × 29 =
  31. 31.39 × 99 =
  32. 32.10 × 49 =
  33. 33.5 × 9 =
  34. 34.12 × 19 =
  35. 35.29 × 99 =
  36. 36.35 × 98 =
  37. 37.10 × 49 =
  38. 38.3 × 49 =
  39. 39.27 × 99 =
  40. 40.3 × 29 =

Answer key

  1. 145
  2. 1176
  3. 3920
  4. 1764
  5. 196
  6. 171
  7. 126
  8. 174
  9. 76
  10. 116
  11. 190
  12. 539
  13. 99
  14. 3465
  15. 637
  16. 76
  17. 90
  18. 1683
  19. 406
  20. 76
  21. 108
  22. 203
  23. 171
  24. 406
  25. 2744
  26. 145
  27. 72
  28. 171
  29. 882
  30. 174
  31. 3861
  32. 490
  33. 45
  34. 228
  35. 2871
  36. 3430
  37. 490
  38. 147
  39. 2673
  40. 87

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