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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 985 · 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. 1.140.6 ÷ 100 =
  2. 2.449.1 ÷ 100 =
  3. 3.215.3 × 1000 =
  4. 4.409.8 ÷ 10 =
  5. 5.2.73 ÷ 1000 =
  6. 6.12.31 ÷ 1000 =
  7. 7.102.4 × 1000 =
  8. 8.24.38 × 10 =
  9. 9.17.24 × 1000 =
  10. 10.37.51 × 1000 =
  11. 11.290.9 ÷ 1000 =
  12. 12.261.6 × 1000 =
  13. 13.37.49 × 10 =
  14. 14.20.84 × 100 =
  15. 15.9.64 × 100 =
  16. 16.16.61 × 1000 =
  17. 17.2.43 × 10 =
  18. 18.118.7 ÷ 10 =
  19. 19.65.6 ÷ 1000 =
  20. 20.6.23 ÷ 10 =
  21. 21.36.01 × 10 =
  22. 22.32.38 ÷ 1000 =
  23. 23.35.27 × 100 =
  24. 24.95.1 ÷ 10 =
  25. 25.138.1 × 10 =
  26. 26.20.21 ÷ 100 =
  27. 27.362.7 × 10 =
  28. 28.13.12 × 1000 =
  29. 29.378.4 ÷ 100 =
  30. 30.188.2 ÷ 10 =
  31. 31.29.6 ÷ 100 =
  32. 32.23.63 ÷ 100 =
  33. 33.32.99 ÷ 100 =
  34. 34.165.3 × 1000 =
  35. 35.26.88 × 10 =
  36. 36.28.8 ÷ 100 =
  37. 37.5.97 × 10 =
  38. 38.309.1 × 1000 =
  39. 39.26.58 ÷ 100 =
  40. 40.340.1 × 100 =

Answer key

  1. 1.406
  2. 4.491
  3. 215300
  4. 40.98
  5. 0.00273
  6. 0.01231
  7. 102400
  8. 243.8
  9. 17240
  10. 37510
  11. 0.2909
  12. 261600
  13. 374.9
  14. 2084
  15. 964
  16. 16610
  17. 24.3
  18. 11.87
  19. 0.0656
  20. 0.623
  21. 360.1
  22. 0.03238
  23. 3527
  24. 9.51
  25. 1381
  26. 0.2021
  27. 3627
  28. 13120
  29. 3.784
  30. 18.82
  31. 0.296
  32. 0.2363
  33. 0.3299
  34. 165300
  35. 268.8
  36. 0.288
  37. 59.7
  38. 309100
  39. 0.2658
  40. 34010

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