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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 626 · 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 × 19 =
  2. 2.4 × 19 =
  3. 3.10 × 99 =
  4. 4.33 × 99 =
  5. 5.7 × 19 =
  6. 6.4 × 98 =
  7. 7.30 × 98 =
  8. 8.4 × 9 =
  9. 9.12 × 99 =
  10. 10.40 × 98 =
  11. 11.6 × 29 =
  12. 12.12 × 9 =
  13. 13.4 × 9 =
  14. 14.11 × 49 =
  15. 15.12 × 19 =
  16. 16.12 × 49 =
  17. 17.21 × 98 =
  18. 18.27 × 99 =
  19. 19.3 × 19 =
  20. 20.11 × 19 =
  21. 21.10 × 9 =
  22. 22.10 × 99 =
  23. 23.12 × 49 =
  24. 24.18 × 98 =
  25. 25.36 × 99 =
  26. 26.25 × 98 =
  27. 27.5 × 9 =
  28. 28.15 × 9 =
  29. 29.16 × 98 =
  30. 30.7 × 19 =
  31. 31.9 × 19 =
  32. 32.4 × 19 =
  33. 33.5 × 9 =
  34. 34.27 × 98 =
  35. 35.9 × 19 =
  36. 36.13 × 19 =
  37. 37.14 × 9 =
  38. 38.3 × 19 =
  39. 39.4 × 49 =
  40. 40.8 × 19 =

Answer key

  1. 247
  2. 76
  3. 990
  4. 3267
  5. 133
  6. 392
  7. 2940
  8. 36
  9. 1188
  10. 3920
  11. 174
  12. 108
  13. 36
  14. 539
  15. 228
  16. 588
  17. 2058
  18. 2673
  19. 57
  20. 209
  21. 90
  22. 990
  23. 588
  24. 1764
  25. 3564
  26. 2450
  27. 45
  28. 135
  29. 1568
  30. 133
  31. 171
  32. 76
  33. 45
  34. 2646
  35. 171
  36. 247
  37. 126
  38. 57
  39. 196
  40. 152

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