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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 265 · 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. 2.11 × 9 =
  3. 3.7 × 49 =
  4. 4.13 × 19 =
  5. 5.29 × 98 =
  6. 6.6 × 49 =
  7. 7.3 × 19 =
  8. 8.4 × 19 =
  9. 9.11 × 19 =
  10. 10.22 × 99 =
  11. 11.8 × 9 =
  12. 12.8 × 98 =
  13. 13.6 × 9 =
  14. 14.6 × 49 =
  15. 15.4 × 19 =
  16. 16.20 × 98 =
  17. 17.40 × 98 =
  18. 18.5 × 29 =
  19. 19.15 × 9 =
  20. 20.6 × 19 =
  21. 21.38 × 99 =
  22. 22.6 × 19 =
  23. 23.14 × 9 =
  24. 24.12 × 19 =
  25. 25.8 × 19 =
  26. 26.7 × 98 =
  27. 27.12 × 29 =
  28. 28.3 × 99 =
  29. 29.15 × 19 =
  30. 30.8 × 9 =
  31. 31.12 × 19 =
  32. 32.28 × 99 =
  33. 33.15 × 9 =
  34. 34.3 × 19 =
  35. 35.3 × 9 =
  36. 36.8 × 9 =
  37. 37.7 × 29 =
  38. 38.6 × 9 =
  39. 39.5 × 29 =
  40. 40.24 × 98 =

Answer key

  1. 294
  2. 99
  3. 343
  4. 247
  5. 2842
  6. 294
  7. 57
  8. 76
  9. 209
  10. 2178
  11. 72
  12. 784
  13. 54
  14. 294
  15. 76
  16. 1960
  17. 3920
  18. 145
  19. 135
  20. 114
  21. 3762
  22. 114
  23. 126
  24. 228
  25. 152
  26. 686
  27. 348
  28. 297
  29. 285
  30. 72
  31. 228
  32. 2772
  33. 135
  34. 57
  35. 27
  36. 72
  37. 203
  38. 54
  39. 145
  40. 2352

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