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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 960 · 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. 1.19 × 98 =
  2. 2.6 × 19 =
  3. 3.8 × 9 =
  4. 4.8 × 29 =
  5. 5.4 × 9 =
  6. 6.11 × 29 =
  7. 7.8 × 9 =
  8. 8.4 × 19 =
  9. 9.3 × 9 =
  10. 10.24 × 99 =
  11. 11.15 × 99 =
  12. 12.28 × 98 =
  13. 13.15 × 19 =
  14. 14.6 × 19 =
  15. 15.10 × 49 =
  16. 16.38 × 99 =
  17. 17.3 × 29 =
  18. 18.10 × 19 =
  19. 19.8 × 9 =
  20. 20.10 × 49 =
  21. 21.33 × 98 =
  22. 22.9 × 98 =
  23. 23.11 × 99 =
  24. 24.4 × 19 =
  25. 25.8 × 29 =
  26. 26.7 × 19 =
  27. 27.9 × 98 =
  28. 28.13 × 9 =
  29. 29.11 × 99 =
  30. 30.5 × 29 =
  31. 31.6 × 19 =
  32. 32.9 × 29 =
  33. 33.15 × 9 =
  34. 34.8 × 99 =
  35. 35.7 × 9 =
  36. 36.14 × 29 =
  37. 37.5 × 29 =
  38. 38.27 × 98 =
  39. 39.5 × 19 =
  40. 40.8 × 9 =

Answer key

  1. 1862
  2. 114
  3. 72
  4. 232
  5. 36
  6. 319
  7. 72
  8. 76
  9. 27
  10. 2376
  11. 1485
  12. 2744
  13. 285
  14. 114
  15. 490
  16. 3762
  17. 87
  18. 190
  19. 72
  20. 490
  21. 3234
  22. 882
  23. 1089
  24. 76
  25. 232
  26. 133
  27. 882
  28. 117
  29. 1089
  30. 145
  31. 114
  32. 261
  33. 135
  34. 792
  35. 63
  36. 406
  37. 145
  38. 2646
  39. 95
  40. 72

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