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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 845 · 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. 1.15 × 29 =
  2. 2.11 × 19 =
  3. 3.6 × 29 =
  4. 4.8 × 49 =
  5. 5.3 × 98 =
  6. 6.10 × 19 =
  7. 7.13 × 19 =
  8. 8.3 × 19 =
  9. 9.8 × 9 =
  10. 10.32 × 98 =
  11. 11.15 × 19 =
  12. 12.4 × 9 =
  13. 13.12 × 19 =
  14. 14.8 × 9 =
  15. 15.37 × 98 =
  16. 16.6 × 19 =
  17. 17.8 × 29 =
  18. 18.15 × 9 =
  19. 19.20 × 98 =
  20. 20.13 × 9 =
  21. 21.8 × 49 =
  22. 22.11 × 99 =
  23. 23.6 × 9 =
  24. 24.3 × 29 =
  25. 25.5 × 49 =
  26. 26.10 × 29 =
  27. 27.13 × 99 =
  28. 28.9 × 29 =
  29. 29.13 × 9 =
  30. 30.12 × 9 =
  31. 31.14 × 98 =
  32. 32.6 × 49 =
  33. 33.10 × 9 =
  34. 34.7 × 98 =
  35. 35.13 × 29 =
  36. 36.3 × 9 =
  37. 37.12 × 29 =
  38. 38.15 × 9 =
  39. 39.10 × 29 =
  40. 40.30 × 98 =

Answer key

  1. 435
  2. 209
  3. 174
  4. 392
  5. 294
  6. 190
  7. 247
  8. 57
  9. 72
  10. 3136
  11. 285
  12. 36
  13. 228
  14. 72
  15. 3626
  16. 114
  17. 232
  18. 135
  19. 1960
  20. 117
  21. 392
  22. 1089
  23. 54
  24. 87
  25. 245
  26. 290
  27. 1287
  28. 261
  29. 117
  30. 108
  31. 1372
  32. 294
  33. 90
  34. 686
  35. 377
  36. 27
  37. 348
  38. 135
  39. 290
  40. 2940

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