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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 964 · 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 × 98 =
  2. 2.15 × 9 =
  3. 3.5 × 49 =
  4. 4.31 × 99 =
  5. 5.4 × 19 =
  6. 6.9 × 98 =
  7. 7.4 × 49 =
  8. 8.6 × 29 =
  9. 9.5 × 29 =
  10. 10.13 × 19 =
  11. 11.11 × 19 =
  12. 12.5 × 9 =
  13. 13.11 × 9 =
  14. 14.6 × 19 =
  15. 15.4 × 19 =
  16. 16.7 × 29 =
  17. 17.6 × 19 =
  18. 18.5 × 29 =
  19. 19.30 × 99 =
  20. 20.13 × 9 =
  21. 21.18 × 98 =
  22. 22.7 × 19 =
  23. 23.4 × 98 =
  24. 24.29 × 99 =
  25. 25.3 × 29 =
  26. 26.38 × 99 =
  27. 27.18 × 98 =
  28. 28.14 × 9 =
  29. 29.13 × 19 =
  30. 30.12 × 19 =
  31. 31.15 × 98 =
  32. 32.28 × 99 =
  33. 33.39 × 98 =
  34. 34.38 × 98 =
  35. 35.9 × 29 =
  36. 36.4 × 19 =
  37. 37.13 × 9 =
  38. 38.13 × 49 =
  39. 39.4 × 98 =
  40. 40.13 × 19 =

Answer key

  1. 1372
  2. 135
  3. 245
  4. 3069
  5. 76
  6. 882
  7. 196
  8. 174
  9. 145
  10. 247
  11. 209
  12. 45
  13. 99
  14. 114
  15. 76
  16. 203
  17. 114
  18. 145
  19. 2970
  20. 117
  21. 1764
  22. 133
  23. 392
  24. 2871
  25. 87
  26. 3762
  27. 1764
  28. 126
  29. 247
  30. 228
  31. 1470
  32. 2772
  33. 3822
  34. 3724
  35. 261
  36. 76
  37. 117
  38. 637
  39. 392
  40. 247

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