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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 713 · 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. 1.7 × 49 =
  2. 2.13 × 49 =
  3. 3.12 × 29 =
  4. 4.6 × 9 =
  5. 5.34 × 99 =
  6. 6.18 × 98 =
  7. 7.4 × 19 =
  8. 8.14 × 9 =
  9. 9.4 × 29 =
  10. 10.26 × 99 =
  11. 11.13 × 19 =
  12. 12.9 × 9 =
  13. 13.36 × 99 =
  14. 14.4 × 49 =
  15. 15.31 × 99 =
  16. 16.8 × 99 =
  17. 17.6 × 19 =
  18. 18.15 × 29 =
  19. 19.9 × 9 =
  20. 20.10 × 29 =
  21. 21.11 × 19 =
  22. 22.10 × 9 =
  23. 23.20 × 98 =
  24. 24.13 × 9 =
  25. 25.12 × 29 =
  26. 26.6 × 99 =
  27. 27.11 × 19 =
  28. 28.3 × 9 =
  29. 29.15 × 9 =
  30. 30.5 × 49 =
  31. 31.6 × 29 =
  32. 32.3 × 98 =
  33. 33.32 × 98 =
  34. 34.6 × 9 =
  35. 35.10 × 9 =
  36. 36.13 × 99 =
  37. 37.13 × 29 =
  38. 38.13 × 29 =
  39. 39.10 × 9 =
  40. 40.13 × 98 =

Answer key

  1. 343
  2. 637
  3. 348
  4. 54
  5. 3366
  6. 1764
  7. 76
  8. 126
  9. 116
  10. 2574
  11. 247
  12. 81
  13. 3564
  14. 196
  15. 3069
  16. 792
  17. 114
  18. 435
  19. 81
  20. 290
  21. 209
  22. 90
  23. 1960
  24. 117
  25. 348
  26. 594
  27. 209
  28. 27
  29. 135
  30. 245
  31. 174
  32. 294
  33. 3136
  34. 54
  35. 90
  36. 1287
  37. 377
  38. 377
  39. 90
  40. 1274

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