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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 275 · 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. 1.17 × 99 =
  2. 2.5 × 98 =
  3. 3.9 × 19 =
  4. 4.27 × 99 =
  5. 5.29 × 98 =
  6. 6.13 × 49 =
  7. 7.13 × 99 =
  8. 8.13 × 19 =
  9. 9.6 × 19 =
  10. 10.34 × 98 =
  11. 11.13 × 9 =
  12. 12.14 × 29 =
  13. 13.13 × 19 =
  14. 14.13 × 29 =
  15. 15.9 × 29 =
  16. 16.6 × 98 =
  17. 17.8 × 29 =
  18. 18.5 × 99 =
  19. 19.6 × 49 =
  20. 20.5 × 19 =
  21. 21.38 × 99 =
  22. 22.5 × 19 =
  23. 23.3 × 9 =
  24. 24.5 × 49 =
  25. 25.32 × 98 =
  26. 26.13 × 19 =
  27. 27.36 × 98 =
  28. 28.4 × 49 =
  29. 29.3 × 9 =
  30. 30.5 × 49 =
  31. 31.18 × 98 =
  32. 32.11 × 19 =
  33. 33.11 × 49 =
  34. 34.13 × 98 =
  35. 35.6 × 19 =
  36. 36.9 × 9 =
  37. 37.7 × 19 =
  38. 38.13 × 98 =
  39. 39.16 × 99 =
  40. 40.13 × 19 =

Answer key

  1. 1683
  2. 490
  3. 171
  4. 2673
  5. 2842
  6. 637
  7. 1287
  8. 247
  9. 114
  10. 3332
  11. 117
  12. 406
  13. 247
  14. 377
  15. 261
  16. 588
  17. 232
  18. 495
  19. 294
  20. 95
  21. 3762
  22. 95
  23. 27
  24. 245
  25. 3136
  26. 247
  27. 3528
  28. 196
  29. 27
  30. 245
  31. 1764
  32. 209
  33. 539
  34. 1274
  35. 114
  36. 81
  37. 133
  38. 1274
  39. 1584
  40. 247

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