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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 85 · 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. 1.4 × 49 =
  2. 2.14 × 29 =
  3. 3.5 × 19 =
  4. 4.15 × 9 =
  5. 5.10 × 9 =
  6. 6.32 × 99 =
  7. 7.5 × 29 =
  8. 8.40 × 99 =
  9. 9.9 × 9 =
  10. 10.5 × 9 =
  11. 11.32 × 99 =
  12. 12.15 × 19 =
  13. 13.4 × 29 =
  14. 14.11 × 29 =
  15. 15.4 × 49 =
  16. 16.13 × 9 =
  17. 17.8 × 19 =
  18. 18.11 × 19 =
  19. 19.3 × 19 =
  20. 20.5 × 29 =
  21. 21.19 × 99 =
  22. 22.9 × 49 =
  23. 23.14 × 9 =
  24. 24.13 × 99 =
  25. 25.10 × 98 =
  26. 26.8 × 9 =
  27. 27.7 × 19 =
  28. 28.9 × 49 =
  29. 29.10 × 9 =
  30. 30.30 × 99 =
  31. 31.13 × 49 =
  32. 32.36 × 99 =
  33. 33.13 × 29 =
  34. 34.14 × 19 =
  35. 35.4 × 19 =
  36. 36.3 × 29 =
  37. 37.7 × 19 =
  38. 38.6 × 29 =
  39. 39.6 × 49 =
  40. 40.10 × 49 =

Answer key

  1. 196
  2. 406
  3. 95
  4. 135
  5. 90
  6. 3168
  7. 145
  8. 3960
  9. 81
  10. 45
  11. 3168
  12. 285
  13. 116
  14. 319
  15. 196
  16. 117
  17. 152
  18. 209
  19. 57
  20. 145
  21. 1881
  22. 441
  23. 126
  24. 1287
  25. 980
  26. 72
  27. 133
  28. 441
  29. 90
  30. 2970
  31. 637
  32. 3564
  33. 377
  34. 266
  35. 76
  36. 87
  37. 133
  38. 174
  39. 294
  40. 490

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