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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 899 · 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. 1.3 × 49 =
  2. 2.15 × 49 =
  3. 3.6 × 19 =
  4. 4.32 × 98 =
  5. 5.11 × 19 =
  6. 6.22 × 99 =
  7. 7.7 × 19 =
  8. 8.9 × 29 =
  9. 9.5 × 29 =
  10. 10.8 × 98 =
  11. 11.6 × 98 =
  12. 12.31 × 98 =
  13. 13.7 × 98 =
  14. 14.3 × 29 =
  15. 15.11 × 99 =
  16. 16.7 × 99 =
  17. 17.9 × 9 =
  18. 18.8 × 49 =
  19. 19.9 × 49 =
  20. 20.11 × 49 =
  21. 21.14 × 9 =
  22. 22.8 × 49 =
  23. 23.9 × 99 =
  24. 24.6 × 9 =
  25. 25.4 × 49 =
  26. 26.8 × 19 =
  27. 27.6 × 19 =
  28. 28.8 × 98 =
  29. 29.6 × 98 =
  30. 30.4 × 49 =
  31. 31.35 × 99 =
  32. 32.21 × 98 =
  33. 33.13 × 29 =
  34. 34.12 × 9 =
  35. 35.14 × 19 =
  36. 36.26 × 99 =
  37. 37.37 × 98 =
  38. 38.11 × 9 =
  39. 39.22 × 98 =
  40. 40.15 × 98 =

Answer key

  1. 147
  2. 735
  3. 114
  4. 3136
  5. 209
  6. 2178
  7. 133
  8. 261
  9. 145
  10. 784
  11. 588
  12. 3038
  13. 686
  14. 87
  15. 1089
  16. 693
  17. 81
  18. 392
  19. 441
  20. 539
  21. 126
  22. 392
  23. 891
  24. 54
  25. 196
  26. 152
  27. 114
  28. 784
  29. 588
  30. 196
  31. 3465
  32. 2058
  33. 377
  34. 108
  35. 266
  36. 2574
  37. 3626
  38. 99
  39. 2156
  40. 1470

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