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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 94 · 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. 1.14 × 99 =
  2. 2.12 × 49 =
  3. 3.10 × 9 =
  4. 4.12 × 19 =
  5. 5.9 × 98 =
  6. 6.28 × 98 =
  7. 7.8 × 98 =
  8. 8.8 × 29 =
  9. 9.4 × 99 =
  10. 10.4 × 99 =
  11. 11.14 × 49 =
  12. 12.7 × 49 =
  13. 13.6 × 19 =
  14. 14.28 × 98 =
  15. 15.9 × 49 =
  16. 16.11 × 9 =
  17. 17.12 × 99 =
  18. 18.4 × 29 =
  19. 19.9 × 29 =
  20. 20.5 × 9 =
  21. 21.6 × 99 =
  22. 22.3 × 49 =
  23. 23.28 × 99 =
  24. 24.5 × 29 =
  25. 25.4 × 99 =
  26. 26.14 × 49 =
  27. 27.13 × 29 =
  28. 28.40 × 98 =
  29. 29.13 × 49 =
  30. 30.4 × 19 =
  31. 31.9 × 99 =
  32. 32.8 × 99 =
  33. 33.8 × 29 =
  34. 34.13 × 9 =
  35. 35.4 × 19 =
  36. 36.9 × 9 =
  37. 37.4 × 19 =
  38. 38.4 × 19 =
  39. 39.4 × 19 =
  40. 40.4 × 9 =

Answer key

  1. 1386
  2. 588
  3. 90
  4. 228
  5. 882
  6. 2744
  7. 784
  8. 232
  9. 396
  10. 396
  11. 686
  12. 343
  13. 114
  14. 2744
  15. 441
  16. 99
  17. 1188
  18. 116
  19. 261
  20. 45
  21. 594
  22. 147
  23. 2772
  24. 145
  25. 396
  26. 686
  27. 377
  28. 3920
  29. 637
  30. 76
  31. 891
  32. 792
  33. 232
  34. 117
  35. 76
  36. 81
  37. 76
  38. 76
  39. 76
  40. 36

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