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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 548 · 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. 1.4 × 49 =
  2. 2.12 × 99 =
  3. 3.7 × 29 =
  4. 4.5 × 49 =
  5. 5.5 × 49 =
  6. 6.3 × 19 =
  7. 7.33 × 99 =
  8. 8.5 × 49 =
  9. 9.20 × 98 =
  10. 10.8 × 29 =
  11. 11.12 × 29 =
  12. 12.4 × 49 =
  13. 13.8 × 9 =
  14. 14.7 × 19 =
  15. 15.29 × 98 =
  16. 16.4 × 9 =
  17. 17.11 × 49 =
  18. 18.31 × 99 =
  19. 19.7 × 29 =
  20. 20.18 × 98 =
  21. 21.15 × 19 =
  22. 22.4 × 9 =
  23. 23.10 × 98 =
  24. 24.10 × 29 =
  25. 25.14 × 9 =
  26. 26.11 × 29 =
  27. 27.14 × 49 =
  28. 28.15 × 19 =
  29. 29.14 × 19 =
  30. 30.38 × 99 =
  31. 31.7 × 99 =
  32. 32.5 × 29 =
  33. 33.11 × 99 =
  34. 34.14 × 9 =
  35. 35.3 × 49 =
  36. 36.10 × 9 =
  37. 37.10 × 49 =
  38. 38.6 × 98 =
  39. 39.32 × 99 =
  40. 40.3 × 19 =

Answer key

  1. 196
  2. 1188
  3. 203
  4. 245
  5. 245
  6. 57
  7. 3267
  8. 245
  9. 1960
  10. 232
  11. 348
  12. 196
  13. 72
  14. 133
  15. 2842
  16. 36
  17. 539
  18. 3069
  19. 203
  20. 1764
  21. 285
  22. 36
  23. 980
  24. 290
  25. 126
  26. 319
  27. 686
  28. 285
  29. 266
  30. 3762
  31. 693
  32. 145
  33. 1089
  34. 126
  35. 147
  36. 90
  37. 490
  38. 588
  39. 3168
  40. 57

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