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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 919 · 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. 1.39 × 98 =
  2. 2.10 × 19 =
  3. 3.12 × 19 =
  4. 4.6 × 49 =
  5. 5.7 × 98 =
  6. 6.9 × 19 =
  7. 7.13 × 9 =
  8. 8.37 × 98 =
  9. 9.7 × 29 =
  10. 10.3 × 29 =
  11. 11.9 × 9 =
  12. 12.7 × 19 =
  13. 13.10 × 29 =
  14. 14.7 × 19 =
  15. 15.11 × 9 =
  16. 16.14 × 29 =
  17. 17.14 × 29 =
  18. 18.7 × 29 =
  19. 19.4 × 29 =
  20. 20.37 × 98 =
  21. 21.12 × 19 =
  22. 22.32 × 98 =
  23. 23.3 × 98 =
  24. 24.40 × 98 =
  25. 25.14 × 9 =
  26. 26.11 × 49 =
  27. 27.26 × 99 =
  28. 28.3 × 98 =
  29. 29.13 × 19 =
  30. 30.11 × 29 =
  31. 31.7 × 9 =
  32. 32.15 × 29 =
  33. 33.13 × 49 =
  34. 34.5 × 29 =
  35. 35.3 × 9 =
  36. 36.8 × 29 =
  37. 37.16 × 99 =
  38. 38.7 × 49 =
  39. 39.14 × 99 =
  40. 40.3 × 19 =

Answer key

  1. 3822
  2. 190
  3. 228
  4. 294
  5. 686
  6. 171
  7. 117
  8. 3626
  9. 203
  10. 87
  11. 81
  12. 133
  13. 290
  14. 133
  15. 99
  16. 406
  17. 406
  18. 203
  19. 116
  20. 3626
  21. 228
  22. 3136
  23. 294
  24. 3920
  25. 126
  26. 539
  27. 2574
  28. 294
  29. 247
  30. 319
  31. 63
  32. 435
  33. 637
  34. 145
  35. 27
  36. 232
  37. 1584
  38. 343
  39. 1386
  40. 57

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