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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 584 · 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. 1.6 × 49 =
  2. 2.7 × 98 =
  3. 3.3 × 19 =
  4. 4.32 × 99 =
  5. 5.12 × 49 =
  6. 6.13 × 99 =
  7. 7.11 × 19 =
  8. 8.5 × 9 =
  9. 9.6 × 19 =
  10. 10.9 × 19 =
  11. 11.11 × 19 =
  12. 12.8 × 49 =
  13. 13.5 × 49 =
  14. 14.5 × 19 =
  15. 15.15 × 49 =
  16. 16.6 × 49 =
  17. 17.10 × 9 =
  18. 18.3 × 99 =
  19. 19.4 × 49 =
  20. 20.15 × 9 =
  21. 21.9 × 29 =
  22. 22.10 × 49 =
  23. 23.10 × 29 =
  24. 24.15 × 9 =
  25. 25.3 × 49 =
  26. 26.6 × 49 =
  27. 27.5 × 19 =
  28. 28.6 × 99 =
  29. 29.6 × 19 =
  30. 30.20 × 99 =
  31. 31.9 × 19 =
  32. 32.8 × 9 =
  33. 33.6 × 49 =
  34. 34.28 × 99 =
  35. 35.13 × 49 =
  36. 36.9 × 9 =
  37. 37.5 × 19 =
  38. 38.8 × 19 =
  39. 39.24 × 98 =
  40. 40.10 × 19 =

Answer key

  1. 294
  2. 686
  3. 57
  4. 3168
  5. 588
  6. 1287
  7. 209
  8. 45
  9. 114
  10. 171
  11. 209
  12. 392
  13. 245
  14. 95
  15. 735
  16. 294
  17. 90
  18. 297
  19. 196
  20. 135
  21. 261
  22. 490
  23. 290
  24. 135
  25. 147
  26. 294
  27. 95
  28. 594
  29. 114
  30. 1980
  31. 171
  32. 72
  33. 294
  34. 2772
  35. 637
  36. 81
  37. 95
  38. 152
  39. 2352
  40. 190

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