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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 250 · 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. 1.14 × 49 =
  2. 2.21 × 98 =
  3. 3.11 × 29 =
  4. 4.40 × 98 =
  5. 5.38 × 99 =
  6. 6.9 × 9 =
  7. 7.27 × 98 =
  8. 8.14 × 49 =
  9. 9.12 × 49 =
  10. 10.3 × 19 =
  11. 11.4 × 9 =
  12. 12.9 × 29 =
  13. 13.30 × 99 =
  14. 14.13 × 49 =
  15. 15.9 × 19 =
  16. 16.9 × 99 =
  17. 17.6 × 49 =
  18. 18.7 × 49 =
  19. 19.8 × 9 =
  20. 20.6 × 98 =
  21. 21.3 × 49 =
  22. 22.26 × 98 =
  23. 23.14 × 49 =
  24. 24.14 × 19 =
  25. 25.3 × 9 =
  26. 26.3 × 9 =
  27. 27.37 × 98 =
  28. 28.22 × 98 =
  29. 29.18 × 99 =
  30. 30.11 × 29 =
  31. 31.3 × 9 =
  32. 32.11 × 29 =
  33. 33.5 × 19 =
  34. 34.6 × 29 =
  35. 35.9 × 19 =
  36. 36.14 × 19 =
  37. 37.4 × 49 =
  38. 38.3 × 19 =
  39. 39.4 × 29 =
  40. 40.11 × 19 =

Answer key

  1. 686
  2. 2058
  3. 319
  4. 3920
  5. 3762
  6. 81
  7. 2646
  8. 686
  9. 588
  10. 57
  11. 36
  12. 261
  13. 2970
  14. 637
  15. 171
  16. 891
  17. 294
  18. 343
  19. 72
  20. 588
  21. 147
  22. 2548
  23. 686
  24. 266
  25. 27
  26. 27
  27. 3626
  28. 2156
  29. 1782
  30. 319
  31. 27
  32. 319
  33. 95
  34. 174
  35. 171
  36. 266
  37. 196
  38. 57
  39. 116
  40. 209

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