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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 200 · 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. 1.3 × 19 =
  2. 2.14 × 9 =
  3. 3.3 × 49 =
  4. 4.13 × 29 =
  5. 5.12 × 49 =
  6. 6.7 × 19 =
  7. 7.26 × 98 =
  8. 8.29 × 99 =
  9. 9.10 × 9 =
  10. 10.9 × 9 =
  11. 11.15 × 49 =
  12. 12.12 × 19 =
  13. 13.6 × 49 =
  14. 14.13 × 98 =
  15. 15.37 × 98 =
  16. 16.22 × 99 =
  17. 17.26 × 98 =
  18. 18.36 × 99 =
  19. 19.39 × 98 =
  20. 20.14 × 19 =
  21. 21.14 × 19 =
  22. 22.9 × 99 =
  23. 23.8 × 49 =
  24. 24.6 × 9 =
  25. 25.8 × 19 =
  26. 26.6 × 29 =
  27. 27.10 × 98 =
  28. 28.8 × 49 =
  29. 29.11 × 19 =
  30. 30.5 × 19 =
  31. 31.7 × 99 =
  32. 32.34 × 99 =
  33. 33.4 × 99 =
  34. 34.15 × 29 =
  35. 35.6 × 49 =
  36. 36.7 × 49 =
  37. 37.5 × 19 =
  38. 38.14 × 29 =
  39. 39.5 × 9 =
  40. 40.6 × 9 =

Answer key

  1. 57
  2. 126
  3. 147
  4. 377
  5. 588
  6. 133
  7. 2548
  8. 2871
  9. 90
  10. 81
  11. 735
  12. 228
  13. 294
  14. 1274
  15. 3626
  16. 2178
  17. 2548
  18. 3564
  19. 3822
  20. 266
  21. 266
  22. 891
  23. 392
  24. 54
  25. 152
  26. 174
  27. 980
  28. 392
  29. 209
  30. 95
  31. 693
  32. 3366
  33. 396
  34. 435
  35. 294
  36. 343
  37. 95
  38. 406
  39. 45
  40. 54

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