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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 936 · 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. 1.7.19 × 10 =
  2. 2.72.1 ÷ 100 =
  3. 3.5.66 × 10 =
  4. 4.117.6 ÷ 10 =
  5. 5.402.4 × 1000 =
  6. 6.94.6 ÷ 10 =
  7. 7.1.41 ÷ 10 =
  8. 8.461.6 × 1000 =
  9. 9.55.8 ÷ 1000 =
  10. 10.111.6 ÷ 1000 =
  11. 11.359.4 ÷ 1000 =
  12. 12.382.2 × 100 =
  13. 13.9.61 × 10 =
  14. 14.379.6 × 100 =
  15. 15.6.22 × 1000 =
  16. 16.36.33 ÷ 1000 =
  17. 17.36.53 × 10 =
  18. 18.175.7 ÷ 1000 =
  19. 19.27.41 ÷ 1000 =
  20. 20.384.6 ÷ 10 =
  21. 21.328.4 ÷ 10 =
  22. 22.220.2 × 100 =
  23. 23.27.33 ÷ 100 =
  24. 24.24.73 × 1000 =
  25. 25.156.9 × 10 =
  26. 26.47.84 × 10 =
  27. 27.42.51 ÷ 1000 =
  28. 28.31.51 ÷ 1000 =
  29. 29.38.74 × 10 =
  30. 30.401.4 × 100 =
  31. 31.9.39 × 1000 =
  32. 32.121.4 ÷ 10 =
  33. 33.20.92 × 1000 =
  34. 34.22.13 × 10 =
  35. 35.465.7 ÷ 100 =
  36. 36.494.8 × 1000 =
  37. 37.399.7 ÷ 100 =
  38. 38.4.08 ÷ 10 =
  39. 39.271.3 ÷ 10 =
  40. 40.1.84 × 10 =

Answer key

  1. 71.9
  2. 0.721
  3. 56.6
  4. 11.76
  5. 402400
  6. 9.46
  7. 0.141
  8. 461600
  9. 0.0558
  10. 0.1116
  11. 0.3594
  12. 38220
  13. 96.1
  14. 37960
  15. 6220
  16. 0.03633
  17. 365.3
  18. 0.1757
  19. 0.02741
  20. 38.46
  21. 32.84
  22. 22020
  23. 0.2733
  24. 24730
  25. 1569
  26. 478.4
  27. 0.04251
  28. 0.03151
  29. 387.4
  30. 40140
  31. 9390
  32. 12.14
  33. 20920
  34. 221.3
  35. 4.657
  36. 494800
  37. 3.997
  38. 0.408
  39. 27.13
  40. 18.4

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