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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 203 · 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. 1.13 × 49 =
  2. 2.14 × 9 =
  3. 3.6 × 9 =
  4. 4.8 × 29 =
  5. 5.11 × 19 =
  6. 6.29 × 99 =
  7. 7.4 × 29 =
  8. 8.12 × 29 =
  9. 9.8 × 9 =
  10. 10.5 × 19 =
  11. 11.7 × 99 =
  12. 12.7 × 19 =
  13. 13.15 × 49 =
  14. 14.7 × 49 =
  15. 15.5 × 19 =
  16. 16.5 × 29 =
  17. 17.10 × 9 =
  18. 18.34 × 98 =
  19. 19.12 × 9 =
  20. 20.13 × 9 =
  21. 21.3 × 9 =
  22. 22.13 × 49 =
  23. 23.5 × 19 =
  24. 24.10 × 9 =
  25. 25.14 × 9 =
  26. 26.11 × 29 =
  27. 27.10 × 9 =
  28. 28.11 × 9 =
  29. 29.3 × 9 =
  30. 30.14 × 9 =
  31. 31.15 × 19 =
  32. 32.3 × 19 =
  33. 33.14 × 9 =
  34. 34.5 × 9 =
  35. 35.12 × 49 =
  36. 36.6 × 49 =
  37. 37.9 × 99 =
  38. 38.12 × 29 =
  39. 39.15 × 98 =
  40. 40.6 × 9 =

Answer key

  1. 637
  2. 126
  3. 54
  4. 232
  5. 209
  6. 2871
  7. 116
  8. 348
  9. 72
  10. 95
  11. 693
  12. 133
  13. 735
  14. 343
  15. 95
  16. 145
  17. 90
  18. 3332
  19. 108
  20. 117
  21. 27
  22. 637
  23. 95
  24. 90
  25. 126
  26. 319
  27. 90
  28. 99
  29. 27
  30. 126
  31. 285
  32. 57
  33. 126
  34. 45
  35. 588
  36. 294
  37. 891
  38. 348
  39. 1470
  40. 54

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