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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 303 · 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. 1.9 × 29 =
  2. 2.4 × 9 =
  3. 3.22 × 98 =
  4. 4.8 × 29 =
  5. 5.7 × 19 =
  6. 6.12 × 9 =
  7. 7.12 × 49 =
  8. 8.38 × 99 =
  9. 9.9 × 49 =
  10. 10.3 × 19 =
  11. 11.22 × 98 =
  12. 12.12 × 29 =
  13. 13.13 × 49 =
  14. 14.5 × 49 =
  15. 15.8 × 49 =
  16. 16.37 × 98 =
  17. 17.12 × 9 =
  18. 18.3 × 9 =
  19. 19.7 × 29 =
  20. 20.26 × 98 =
  21. 21.10 × 9 =
  22. 22.15 × 98 =
  23. 23.13 × 49 =
  24. 24.13 × 49 =
  25. 25.10 × 9 =
  26. 26.7 × 29 =
  27. 27.14 × 29 =
  28. 28.13 × 49 =
  29. 29.3 × 19 =
  30. 30.4 × 9 =
  31. 31.9 × 19 =
  32. 32.8 × 19 =
  33. 33.11 × 19 =
  34. 34.8 × 98 =
  35. 35.15 × 19 =
  36. 36.11 × 29 =
  37. 37.11 × 49 =
  38. 38.9 × 49 =
  39. 39.4 × 29 =
  40. 40.5 × 9 =

Answer key

  1. 261
  2. 36
  3. 2156
  4. 232
  5. 133
  6. 108
  7. 588
  8. 3762
  9. 441
  10. 57
  11. 2156
  12. 348
  13. 637
  14. 245
  15. 392
  16. 3626
  17. 108
  18. 27
  19. 203
  20. 2548
  21. 90
  22. 1470
  23. 637
  24. 637
  25. 90
  26. 203
  27. 406
  28. 637
  29. 57
  30. 36
  31. 171
  32. 152
  33. 209
  34. 784
  35. 285
  36. 319
  37. 539
  38. 441
  39. 116
  40. 45

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