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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 331 · 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. 1.81.2 ÷ 10 =
  2. 2.2.85 ÷ 1000 =
  3. 3.63.3 ÷ 1000 =
  4. 4.48.46 × 10 =
  5. 5.327.9 ÷ 1000 =
  6. 6.9.4 ÷ 10 =
  7. 7.264.6 ÷ 10 =
  8. 8.303.6 × 10 =
  9. 9.17.3 × 10 =
  10. 10.11.76 ÷ 10 =
  11. 11.453.2 ÷ 10 =
  12. 12.33.24 × 10 =
  13. 13.290.9 × 10 =
  14. 14.31.19 ÷ 10 =
  15. 15.140.6 ÷ 100 =
  16. 16.72.7 × 100 =
  17. 17.0.33 × 1000 =
  18. 18.220.5 ÷ 1000 =
  19. 19.32.44 ÷ 100 =
  20. 20.235.7 ÷ 1000 =
  21. 21.286.8 ÷ 1000 =
  22. 22.379.9 × 1000 =
  23. 23.249.1 × 10 =
  24. 24.40.35 ÷ 10 =
  25. 25.11.25 × 1000 =
  26. 26.320.1 × 10 =
  27. 27.33.55 × 100 =
  28. 28.261.1 ÷ 10 =
  29. 29.10.43 × 10 =
  30. 30.158.6 ÷ 10 =
  31. 31.25.15 × 100 =
  32. 32.272.1 ÷ 10 =
  33. 33.50.5 × 100 =
  34. 34.2.91 ÷ 10 =
  35. 35.84.7 × 10 =
  36. 36.5.94 × 10 =
  37. 37.46.96 ÷ 1000 =
  38. 38.33.29 × 100 =
  39. 39.86.7 ÷ 1000 =
  40. 40.30.58 × 1000 =

Answer key

  1. 8.12
  2. 0.00285
  3. 0.0633
  4. 484.6
  5. 0.3279
  6. 0.94
  7. 26.46
  8. 3036
  9. 173
  10. 1.176
  11. 45.32
  12. 332.4
  13. 2909
  14. 3.119
  15. 1.406
  16. 7270
  17. 330
  18. 0.2205
  19. 0.3244
  20. 0.2357
  21. 0.2868
  22. 379900
  23. 2491
  24. 4.035
  25. 11250
  26. 3201
  27. 3355
  28. 26.11
  29. 104.3
  30. 15.86
  31. 2515
  32. 27.21
  33. 5050
  34. 0.291
  35. 847
  36. 59.4
  37. 0.04696
  38. 3329
  39. 0.0867
  40. 30580

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