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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 616 · 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. 1.3.88 × 10 =
  2. 2.158.9 × 1000 =
  3. 3.25.25 ÷ 1000 =
  4. 4.3.91 × 100 =
  5. 5.25.31 ÷ 1000 =
  6. 6.380.4 × 10 =
  7. 7.37.01 ÷ 1000 =
  8. 8.48.07 ÷ 100 =
  9. 9.264.1 ÷ 1000 =
  10. 10.15.01 × 10 =
  11. 11.240.6 ÷ 10 =
  12. 12.174.2 ÷ 10 =
  13. 13.44.03 × 10 =
  14. 14.449.9 ÷ 1000 =
  15. 15.2.82 ÷ 10 =
  16. 16.92.1 × 1000 =
  17. 17.239.6 ÷ 100 =
  18. 18.2.26 × 1000 =
  19. 19.18.12 ÷ 100 =
  20. 20.43.4 ÷ 100 =
  21. 21.11.71 ÷ 100 =
  22. 22.42.04 ÷ 100 =
  23. 23.159.6 ÷ 100 =
  24. 24.52.2 × 10 =
  25. 25.9.96 ÷ 1000 =
  26. 26.14.63 × 10 =
  27. 27.46.93 ÷ 10 =
  28. 28.17.01 × 100 =
  29. 29.31.07 ÷ 1000 =
  30. 30.479.1 ÷ 10 =
  31. 31.376.3 × 10 =
  32. 32.331.1 × 10 =
  33. 33.39.93 ÷ 100 =
  34. 34.41.71 ÷ 100 =
  35. 35.74.1 ÷ 10 =
  36. 36.42.81 ÷ 1000 =
  37. 37.54.2 × 100 =
  38. 38.24.9 ÷ 10 =
  39. 39.39.63 × 100 =
  40. 40.74.2 × 10 =

Answer key

  1. 38.8
  2. 158900
  3. 0.02525
  4. 391
  5. 0.02531
  6. 3804
  7. 0.03701
  8. 0.4807
  9. 0.2641
  10. 150.1
  11. 24.06
  12. 17.42
  13. 440.3
  14. 0.4499
  15. 0.282
  16. 92100
  17. 2.396
  18. 2260
  19. 0.1812
  20. 0.434
  21. 0.1171
  22. 0.4204
  23. 1.596
  24. 522
  25. 0.00996
  26. 146.3
  27. 4.693
  28. 1701
  29. 0.03107
  30. 47.91
  31. 3763
  32. 3311
  33. 0.3993
  34. 0.4171
  35. 7.41
  36. 0.04281
  37. 5420
  38. 2.49
  39. 3963
  40. 742

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