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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 23 · 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. 1.5 × 9 =
  2. 2.13 × 99 =
  3. 3.14 × 29 =
  4. 4.4 × 29 =
  5. 5.39 × 98 =
  6. 6.7 × 29 =
  7. 7.11 × 49 =
  8. 8.14 × 19 =
  9. 9.3 × 29 =
  10. 10.9 × 9 =
  11. 11.14 × 19 =
  12. 12.3 × 9 =
  13. 13.34 × 99 =
  14. 14.9 × 9 =
  15. 15.12 × 9 =
  16. 16.5 × 9 =
  17. 17.15 × 29 =
  18. 18.6 × 29 =
  19. 19.6 × 9 =
  20. 20.3 × 9 =
  21. 21.12 × 19 =
  22. 22.11 × 19 =
  23. 23.8 × 19 =
  24. 24.34 × 99 =
  25. 25.4 × 29 =
  26. 26.11 × 49 =
  27. 27.14 × 98 =
  28. 28.3 × 9 =
  29. 29.15 × 19 =
  30. 30.7 × 98 =
  31. 31.13 × 29 =
  32. 32.33 × 99 =
  33. 33.38 × 98 =
  34. 34.11 × 19 =
  35. 35.5 × 9 =
  36. 36.10 × 19 =
  37. 37.3 × 49 =
  38. 38.8 × 98 =
  39. 39.13 × 49 =
  40. 40.15 × 49 =

Answer key

  1. 45
  2. 1287
  3. 406
  4. 116
  5. 3822
  6. 203
  7. 539
  8. 266
  9. 87
  10. 81
  11. 266
  12. 27
  13. 3366
  14. 81
  15. 108
  16. 45
  17. 435
  18. 174
  19. 54
  20. 27
  21. 228
  22. 209
  23. 152
  24. 3366
  25. 116
  26. 539
  27. 1372
  28. 27
  29. 285
  30. 686
  31. 377
  32. 3267
  33. 3724
  34. 209
  35. 45
  36. 190
  37. 147
  38. 784
  39. 637
  40. 735

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