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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 260 · 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. 2.6 × 19 =
  3. 3.11 × 9 =
  4. 4.10 × 29 =
  5. 5.7 × 9 =
  6. 6.22 × 98 =
  7. 7.5 × 9 =
  8. 8.8 × 29 =
  9. 9.19 × 98 =
  10. 10.15 × 9 =
  11. 11.15 × 19 =
  12. 12.36 × 99 =
  13. 13.39 × 99 =
  14. 14.6 × 29 =
  15. 15.10 × 29 =
  16. 16.14 × 9 =
  17. 17.8 × 9 =
  18. 18.6 × 49 =
  19. 19.3 × 9 =
  20. 20.27 × 98 =
  21. 21.8 × 29 =
  22. 22.18 × 98 =
  23. 23.3 × 9 =
  24. 24.21 × 98 =
  25. 25.12 × 9 =
  26. 26.16 × 98 =
  27. 27.15 × 19 =
  28. 28.6 × 29 =
  29. 29.9 × 29 =
  30. 30.24 × 98 =
  31. 31.7 × 29 =
  32. 32.40 × 98 =
  33. 33.33 × 99 =
  34. 34.10 × 29 =
  35. 35.4 × 19 =
  36. 36.34 × 99 =
  37. 37.13 × 19 =
  38. 38.3 × 19 =
  39. 39.35 × 98 =
  40. 40.10 × 19 =

Answer key

  1. 294
  2. 114
  3. 99
  4. 290
  5. 63
  6. 2156
  7. 45
  8. 232
  9. 1862
  10. 135
  11. 285
  12. 3564
  13. 3861
  14. 174
  15. 290
  16. 126
  17. 72
  18. 294
  19. 27
  20. 2646
  21. 232
  22. 1764
  23. 27
  24. 2058
  25. 108
  26. 1568
  27. 285
  28. 174
  29. 261
  30. 2352
  31. 203
  32. 3920
  33. 3267
  34. 290
  35. 76
  36. 3366
  37. 247
  38. 57
  39. 3430
  40. 190

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