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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 926 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.15.93 × 100 =
  2. 2.322.9 × 100 =
  3. 3.18.84 × 10 =
  4. 4.326.4 ÷ 10 =
  5. 5.79.7 ÷ 1000 =
  6. 6.48.94 × 10 =
  7. 7.345.6 × 100 =
  8. 8.66.5 × 100 =
  9. 9.28.79 ÷ 1000 =
  10. 10.166.4 ÷ 100 =
  11. 11.259.9 × 100 =
  12. 12.415.1 ÷ 100 =
  13. 13.243.2 × 100 =
  14. 14.48.94 ÷ 1000 =
  15. 15.3.99 × 100 =
  16. 16.145.1 ÷ 100 =
  17. 17.176.6 ÷ 10 =
  18. 18.384.7 ÷ 10 =
  19. 19.422.4 × 10 =
  20. 20.390.1 ÷ 1000 =
  21. 21.36.72 ÷ 10 =
  22. 22.378.2 × 10 =
  23. 23.48.14 × 100 =
  24. 24.302.3 × 10 =
  25. 25.1.77 ÷ 100 =
  26. 26.36.19 ÷ 10 =
  27. 27.47.22 ÷ 10 =
  28. 28.36.05 ÷ 10 =
  29. 29.17.37 × 100 =
  30. 30.88.1 × 10 =
  31. 31.88.1 × 10 =
  32. 32.248.8 ÷ 100 =
  33. 33.3.97 × 10 =
  34. 34.8.21 × 1000 =
  35. 35.317.5 × 10 =
  36. 36.103.8 ÷ 100 =
  37. 37.19.41 × 10 =
  38. 38.2.31 × 100 =
  39. 39.26.5 × 1000 =
  40. 40.304.2 × 100 =

Answer key

  1. 1593
  2. 32290
  3. 188.4
  4. 32.64
  5. 0.0797
  6. 489.4
  7. 34560
  8. 6650
  9. 0.02879
  10. 1.664
  11. 25990
  12. 4.151
  13. 24320
  14. 0.04894
  15. 399
  16. 1.451
  17. 17.66
  18. 38.47
  19. 4224
  20. 0.3901
  21. 3.672
  22. 3782
  23. 4814
  24. 3023
  25. 0.0177
  26. 3.619
  27. 4.722
  28. 3.605
  29. 1737
  30. 881
  31. 881
  32. 2.488
  33. 39.7
  34. 8210
  35. 3175
  36. 1.038
  37. 194.1
  38. 231
  39. 26500
  40. 30420

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