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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 984 · 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. 1.6 × 98 =
  2. 2.6 × 19 =
  3. 3.23 × 98 =
  4. 4.9 × 19 =
  5. 5.9 × 49 =
  6. 6.7 × 49 =
  7. 7.25 × 98 =
  8. 8.4 × 99 =
  9. 9.7 × 19 =
  10. 10.16 × 98 =
  11. 11.22 × 99 =
  12. 12.30 × 98 =
  13. 13.21 × 98 =
  14. 14.32 × 99 =
  15. 15.37 × 98 =
  16. 16.10 × 9 =
  17. 17.35 × 99 =
  18. 18.5 × 19 =
  19. 19.8 × 9 =
  20. 20.8 × 98 =
  21. 21.12 × 98 =
  22. 22.16 × 98 =
  23. 23.6 × 49 =
  24. 24.10 × 49 =
  25. 25.4 × 49 =
  26. 26.8 × 29 =
  27. 27.9 × 19 =
  28. 28.5 × 9 =
  29. 29.23 × 98 =
  30. 30.4 × 49 =
  31. 31.8 × 19 =
  32. 32.19 × 99 =
  33. 33.6 × 19 =
  34. 34.9 × 19 =
  35. 35.15 × 29 =
  36. 36.21 × 99 =
  37. 37.6 × 99 =
  38. 38.15 × 49 =
  39. 39.4 × 9 =
  40. 40.14 × 9 =

Answer key

  1. 588
  2. 114
  3. 2254
  4. 171
  5. 441
  6. 343
  7. 2450
  8. 396
  9. 133
  10. 1568
  11. 2178
  12. 2940
  13. 2058
  14. 3168
  15. 3626
  16. 90
  17. 3465
  18. 95
  19. 72
  20. 784
  21. 1176
  22. 1568
  23. 294
  24. 490
  25. 196
  26. 232
  27. 171
  28. 45
  29. 2254
  30. 196
  31. 152
  32. 1881
  33. 114
  34. 171
  35. 435
  36. 2079
  37. 594
  38. 735
  39. 36
  40. 126

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