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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 551 · 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. 1.6 × 49 =
  2. 2.29 × 99 =
  3. 3.7 × 29 =
  4. 4.5 × 98 =
  5. 5.4 × 98 =
  6. 6.13 × 19 =
  7. 7.8 × 29 =
  8. 8.5 × 9 =
  9. 9.39 × 99 =
  10. 10.7 × 29 =
  11. 11.15 × 98 =
  12. 12.22 × 98 =
  13. 13.6 × 49 =
  14. 14.3 × 49 =
  15. 15.7 × 19 =
  16. 16.14 × 19 =
  17. 17.32 × 99 =
  18. 18.7 × 9 =
  19. 19.7 × 49 =
  20. 20.12 × 19 =
  21. 21.12 × 9 =
  22. 22.5 × 9 =
  23. 23.38 × 98 =
  24. 24.14 × 19 =
  25. 25.11 × 99 =
  26. 26.34 × 99 =
  27. 27.14 × 9 =
  28. 28.15 × 29 =
  29. 29.14 × 9 =
  30. 30.13 × 19 =
  31. 31.13 × 29 =
  32. 32.14 × 9 =
  33. 33.11 × 49 =
  34. 34.5 × 49 =
  35. 35.12 × 9 =
  36. 36.11 × 9 =
  37. 37.7 × 19 =
  38. 38.3 × 9 =
  39. 39.40 × 99 =
  40. 40.4 × 9 =

Answer key

  1. 294
  2. 2871
  3. 203
  4. 490
  5. 392
  6. 247
  7. 232
  8. 45
  9. 3861
  10. 203
  11. 1470
  12. 2156
  13. 294
  14. 147
  15. 133
  16. 266
  17. 3168
  18. 63
  19. 343
  20. 228
  21. 108
  22. 45
  23. 3724
  24. 266
  25. 1089
  26. 3366
  27. 126
  28. 435
  29. 126
  30. 247
  31. 377
  32. 126
  33. 539
  34. 245
  35. 108
  36. 99
  37. 133
  38. 27
  39. 3960
  40. 36

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