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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 433 · 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 × 29 =
  2. 2.8 × 99 =
  3. 3.22 × 98 =
  4. 4.4 × 29 =
  5. 5.6 × 49 =
  6. 6.12 × 9 =
  7. 7.6 × 19 =
  8. 8.13 × 29 =
  9. 9.40 × 99 =
  10. 10.13 × 29 =
  11. 11.5 × 9 =
  12. 12.6 × 9 =
  13. 13.3 × 98 =
  14. 14.5 × 19 =
  15. 15.15 × 49 =
  16. 16.6 × 19 =
  17. 17.9 × 19 =
  18. 18.5 × 19 =
  19. 19.4 × 49 =
  20. 20.21 × 99 =
  21. 21.13 × 19 =
  22. 22.11 × 19 =
  23. 23.12 × 49 =
  24. 24.12 × 99 =
  25. 25.21 × 99 =
  26. 26.9 × 19 =
  27. 27.15 × 9 =
  28. 28.35 × 98 =
  29. 29.12 × 98 =
  30. 30.11 × 98 =
  31. 31.8 × 19 =
  32. 32.6 × 98 =
  33. 33.15 × 19 =
  34. 34.7 × 49 =
  35. 35.5 × 9 =
  36. 36.22 × 98 =
  37. 37.8 × 98 =
  38. 38.10 × 98 =
  39. 39.11 × 19 =
  40. 40.6 × 49 =

Answer key

  1. 116
  2. 792
  3. 2156
  4. 116
  5. 294
  6. 108
  7. 114
  8. 377
  9. 3960
  10. 377
  11. 45
  12. 54
  13. 294
  14. 95
  15. 735
  16. 114
  17. 171
  18. 95
  19. 196
  20. 2079
  21. 247
  22. 209
  23. 588
  24. 1188
  25. 2079
  26. 171
  27. 135
  28. 3430
  29. 1176
  30. 1078
  31. 152
  32. 588
  33. 285
  34. 343
  35. 45
  36. 2156
  37. 784
  38. 980
  39. 209
  40. 294

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