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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 820 · 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. 1.115.9 ÷ 10 =
  2. 2.99.1 × 100 =
  3. 3.20.68 × 10 =
  4. 4.439.6 × 10 =
  5. 5.238.6 ÷ 1000 =
  6. 6.32.05 ÷ 100 =
  7. 7.392.3 ÷ 1000 =
  8. 8.436.2 ÷ 1000 =
  9. 9.118.7 ÷ 100 =
  10. 10.5.8 ÷ 10 =
  11. 11.67.9 × 1000 =
  12. 12.2.36 × 1000 =
  13. 13.5.69 ÷ 1000 =
  14. 14.366.2 × 1000 =
  15. 15.27.84 × 100 =
  16. 16.167.1 ÷ 10 =
  17. 17.18.95 ÷ 1000 =
  18. 18.6.89 × 1000 =
  19. 19.32.81 × 100 =
  20. 20.280.1 × 1000 =
  21. 21.22.43 ÷ 100 =
  22. 22.87.4 × 1000 =
  23. 23.42.03 ÷ 100 =
  24. 24.38.56 × 10 =
  25. 25.115.1 × 100 =
  26. 26.211.9 × 100 =
  27. 27.20.04 ÷ 1000 =
  28. 28.12.77 ÷ 1000 =
  29. 29.98.6 ÷ 10 =
  30. 30.45.71 ÷ 1000 =
  31. 31.380.1 ÷ 10 =
  32. 32.42.4 ÷ 100 =
  33. 33.20.52 × 100 =
  34. 34.6.37 × 10 =
  35. 35.215.5 × 10 =
  36. 36.1.75 ÷ 10 =
  37. 37.154.5 × 1000 =
  38. 38.13.81 ÷ 10 =
  39. 39.393.1 × 1000 =
  40. 40.4.62 ÷ 10 =

Answer key

  1. 11.59
  2. 9910
  3. 206.8
  4. 4396
  5. 0.2386
  6. 0.3205
  7. 0.3923
  8. 0.4362
  9. 1.187
  10. 0.58
  11. 67900
  12. 2360
  13. 0.00569
  14. 366200
  15. 2784
  16. 16.71
  17. 0.01895
  18. 6890
  19. 3281
  20. 280100
  21. 0.2243
  22. 87400
  23. 0.4203
  24. 385.6
  25. 11510
  26. 21190
  27. 0.02004
  28. 0.01277
  29. 9.86
  30. 0.04571
  31. 38.01
  32. 0.424
  33. 2052
  34. 63.7
  35. 2155
  36. 0.175
  37. 154500
  38. 1.381
  39. 393100
  40. 0.462

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