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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 444 · 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. 1.11 × 9 =
  2. 2.8 × 29 =
  3. 3.3 × 9 =
  4. 4.8 × 49 =
  5. 5.12 × 19 =
  6. 6.12 × 49 =
  7. 7.11 × 99 =
  8. 8.7 × 49 =
  9. 9.7 × 19 =
  10. 10.5 × 9 =
  11. 11.5 × 49 =
  12. 12.28 × 98 =
  13. 13.6 × 49 =
  14. 14.14 × 49 =
  15. 15.16 × 99 =
  16. 16.15 × 29 =
  17. 17.8 × 9 =
  18. 18.15 × 99 =
  19. 19.12 × 29 =
  20. 20.39 × 98 =
  21. 21.11 × 99 =
  22. 22.4 × 19 =
  23. 23.5 × 9 =
  24. 24.14 × 29 =
  25. 25.6 × 19 =
  26. 26.12 × 19 =
  27. 27.6 × 49 =
  28. 28.23 × 99 =
  29. 29.8 × 19 =
  30. 30.3 × 29 =
  31. 31.15 × 19 =
  32. 32.22 × 98 =
  33. 33.36 × 99 =
  34. 34.11 × 98 =
  35. 35.5 × 19 =
  36. 36.4 × 9 =
  37. 37.9 × 98 =
  38. 38.7 × 49 =
  39. 39.11 × 19 =
  40. 40.7 × 9 =

Answer key

  1. 99
  2. 232
  3. 27
  4. 392
  5. 228
  6. 588
  7. 1089
  8. 343
  9. 133
  10. 45
  11. 245
  12. 2744
  13. 294
  14. 686
  15. 1584
  16. 435
  17. 72
  18. 1485
  19. 348
  20. 3822
  21. 1089
  22. 76
  23. 45
  24. 406
  25. 114
  26. 228
  27. 294
  28. 2277
  29. 152
  30. 87
  31. 285
  32. 2156
  33. 3564
  34. 1078
  35. 95
  36. 36
  37. 882
  38. 343
  39. 209
  40. 63

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