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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 953 · 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 × 19 =
  2. 2.27 × 98 =
  3. 3.6 × 98 =
  4. 4.15 × 29 =
  5. 5.6 × 9 =
  6. 6.5 × 19 =
  7. 7.7 × 49 =
  8. 8.11 × 9 =
  9. 9.7 × 49 =
  10. 10.8 × 29 =
  11. 11.10 × 49 =
  12. 12.8 × 98 =
  13. 13.3 × 19 =
  14. 14.14 × 9 =
  15. 15.3 × 99 =
  16. 16.15 × 29 =
  17. 17.6 × 9 =
  18. 18.11 × 98 =
  19. 19.6 × 29 =
  20. 20.22 × 98 =
  21. 21.9 × 49 =
  22. 22.4 × 99 =
  23. 23.4 × 19 =
  24. 24.15 × 49 =
  25. 25.10 × 29 =
  26. 26.9 × 98 =
  27. 27.19 × 99 =
  28. 28.4 × 19 =
  29. 29.4 × 9 =
  30. 30.9 × 29 =
  31. 31.4 × 99 =
  32. 32.7 × 29 =
  33. 33.15 × 29 =
  34. 34.33 × 98 =
  35. 35.11 × 49 =
  36. 36.3 × 9 =
  37. 37.4 × 19 =
  38. 38.12 × 99 =
  39. 39.9 × 29 =
  40. 40.3 × 19 =

Answer key

  1. 114
  2. 2646
  3. 588
  4. 435
  5. 54
  6. 95
  7. 343
  8. 99
  9. 343
  10. 232
  11. 490
  12. 784
  13. 57
  14. 126
  15. 297
  16. 435
  17. 54
  18. 1078
  19. 174
  20. 2156
  21. 441
  22. 396
  23. 76
  24. 735
  25. 290
  26. 882
  27. 1881
  28. 76
  29. 36
  30. 261
  31. 396
  32. 203
  33. 435
  34. 3234
  35. 539
  36. 27
  37. 76
  38. 1188
  39. 261
  40. 57

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