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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 838 · 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. 1.3 × 9 =
  2. 2.14 × 9 =
  3. 3.13 × 19 =
  4. 4.4 × 9 =
  5. 5.10 × 9 =
  6. 6.13 × 19 =
  7. 7.11 × 19 =
  8. 8.5 × 9 =
  9. 9.11 × 9 =
  10. 10.13 × 49 =
  11. 11.3 × 49 =
  12. 12.5 × 49 =
  13. 13.7 × 49 =
  14. 14.5 × 19 =
  15. 15.11 × 98 =
  16. 16.12 × 99 =
  17. 17.39 × 98 =
  18. 18.7 × 49 =
  19. 19.6 × 49 =
  20. 20.12 × 9 =
  21. 21.35 × 98 =
  22. 22.14 × 99 =
  23. 23.8 × 99 =
  24. 24.3 × 9 =
  25. 25.36 × 99 =
  26. 26.4 × 9 =
  27. 27.13 × 19 =
  28. 28.14 × 29 =
  29. 29.15 × 9 =
  30. 30.5 × 9 =
  31. 31.6 × 49 =
  32. 32.3 × 98 =
  33. 33.18 × 98 =
  34. 34.8 × 29 =
  35. 35.36 × 99 =
  36. 36.4 × 99 =
  37. 37.15 × 19 =
  38. 38.6 × 49 =
  39. 39.7 × 99 =
  40. 40.13 × 99 =

Answer key

  1. 27
  2. 126
  3. 247
  4. 36
  5. 90
  6. 247
  7. 209
  8. 45
  9. 99
  10. 637
  11. 147
  12. 245
  13. 343
  14. 95
  15. 1078
  16. 1188
  17. 3822
  18. 343
  19. 294
  20. 108
  21. 3430
  22. 1386
  23. 792
  24. 27
  25. 3564
  26. 36
  27. 247
  28. 406
  29. 135
  30. 45
  31. 294
  32. 294
  33. 1764
  34. 232
  35. 3564
  36. 396
  37. 285
  38. 294
  39. 693
  40. 1287

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