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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 679 · 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 × 19 =
  2. 2.37 × 98 =
  3. 3.14 × 29 =
  4. 4.3 × 9 =
  5. 5.12 × 9 =
  6. 6.9 × 49 =
  7. 7.28 × 99 =
  8. 8.4 × 98 =
  9. 9.7 × 49 =
  10. 10.5 × 49 =
  11. 11.4 × 29 =
  12. 12.12 × 19 =
  13. 13.14 × 29 =
  14. 14.12 × 29 =
  15. 15.4 × 49 =
  16. 16.4 × 19 =
  17. 17.4 × 29 =
  18. 18.9 × 49 =
  19. 19.10 × 9 =
  20. 20.8 × 29 =
  21. 21.10 × 19 =
  22. 22.3 × 19 =
  23. 23.5 × 29 =
  24. 24.6 × 29 =
  25. 25.11 × 19 =
  26. 26.7 × 29 =
  27. 27.13 × 19 =
  28. 28.5 × 99 =
  29. 29.15 × 9 =
  30. 30.11 × 29 =
  31. 31.8 × 29 =
  32. 32.3 × 9 =
  33. 33.10 × 9 =
  34. 34.15 × 19 =
  35. 35.14 × 9 =
  36. 36.12 × 9 =
  37. 37.5 × 29 =
  38. 38.14 × 29 =
  39. 39.32 × 98 =
  40. 40.3 × 99 =

Answer key

  1. 133
  2. 3626
  3. 406
  4. 27
  5. 108
  6. 441
  7. 2772
  8. 392
  9. 343
  10. 245
  11. 116
  12. 228
  13. 406
  14. 348
  15. 196
  16. 76
  17. 116
  18. 441
  19. 90
  20. 232
  21. 190
  22. 57
  23. 145
  24. 174
  25. 209
  26. 203
  27. 247
  28. 495
  29. 135
  30. 319
  31. 232
  32. 27
  33. 90
  34. 285
  35. 126
  36. 108
  37. 145
  38. 406
  39. 3136
  40. 297

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