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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 920 · 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 ÷ 100 =
  2. 2.47.44 × 10 =
  3. 3.19.84 × 100 =
  4. 4.45.74 × 10 =
  5. 5.15.45 × 100 =
  6. 6.199.7 ÷ 100 =
  7. 7.7.71 × 1000 =
  8. 8.377.8 × 100 =
  9. 9.10.51 ÷ 1000 =
  10. 10.290.1 ÷ 1000 =
  11. 11.193.1 × 10 =
  12. 12.2.73 × 1000 =
  13. 13.249.7 × 1000 =
  14. 14.386.9 ÷ 10 =
  15. 15.14.64 × 10 =
  16. 16.155.5 ÷ 100 =
  17. 17.239.4 × 1000 =
  18. 18.11.39 ÷ 10 =
  19. 19.37.1 ÷ 100 =
  20. 20.35.9 × 100 =
  21. 21.34.1 ÷ 1000 =
  22. 22.27.92 × 100 =
  23. 23.0.29 × 100 =
  24. 24.7.28 ÷ 10 =
  25. 25.32.74 × 100 =
  26. 26.497.4 ÷ 100 =
  27. 27.24.78 × 10 =
  28. 28.325.7 × 1000 =
  29. 29.12.77 ÷ 10 =
  30. 30.109.7 ÷ 10 =
  31. 31.144.9 ÷ 1000 =
  32. 32.120.6 × 10 =
  33. 33.162.9 × 100 =
  34. 34.134.4 × 100 =
  35. 35.477.6 × 100 =
  36. 36.28.12 ÷ 10 =
  37. 37.257.5 ÷ 10 =
  38. 38.305.5 × 1000 =
  39. 39.322.1 ÷ 10 =
  40. 40.246.9 ÷ 10 =

Answer key

  1. 0.0719
  2. 474.4
  3. 1984
  4. 457.4
  5. 1545
  6. 1.997
  7. 7710
  8. 37780
  9. 0.01051
  10. 0.2901
  11. 1931
  12. 2730
  13. 249700
  14. 38.69
  15. 146.4
  16. 1.555
  17. 239400
  18. 1.139
  19. 0.371
  20. 3590
  21. 0.0341
  22. 2792
  23. 29
  24. 0.728
  25. 3274
  26. 4.974
  27. 247.8
  28. 325700
  29. 1.277
  30. 10.97
  31. 0.1449
  32. 1206
  33. 16290
  34. 13440
  35. 47760
  36. 2.812
  37. 25.75
  38. 305500
  39. 32.21
  40. 24.69

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