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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 183 · 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. 1.121.9 × 10 =
  2. 2.47.98 ÷ 100 =
  3. 3.486.1 × 100 =
  4. 4.273.1 ÷ 1000 =
  5. 5.12.7 ÷ 10 =
  6. 6.3.79 ÷ 1000 =
  7. 7.440.2 ÷ 10 =
  8. 8.215.2 × 1000 =
  9. 9.44.72 × 10 =
  10. 10.207.1 ÷ 10 =
  11. 11.23.78 ÷ 10 =
  12. 12.0.86 × 100 =
  13. 13.346.6 × 10 =
  14. 14.54.9 ÷ 10 =
  15. 15.332.5 × 10 =
  16. 16.11.81 ÷ 10 =
  17. 17.36.38 × 10 =
  18. 18.58.4 × 1000 =
  19. 19.35.73 × 10 =
  20. 20.395.8 × 10 =
  21. 21.21.15 ÷ 10 =
  22. 22.14.42 ÷ 1000 =
  23. 23.11.1 × 10 =
  24. 24.376.2 ÷ 1000 =
  25. 25.127.1 × 100 =
  26. 26.22.65 ÷ 10 =
  27. 27.2.17 × 1000 =
  28. 28.182.1 × 1000 =
  29. 29.312.1 ÷ 10 =
  30. 30.23.08 × 10 =
  31. 31.40.11 × 10 =
  32. 32.26.92 × 100 =
  33. 33.181.1 × 100 =
  34. 34.466.7 ÷ 100 =
  35. 35.6.73 × 100 =
  36. 36.41.27 × 100 =
  37. 37.440.9 ÷ 10 =
  38. 38.280.1 × 1000 =
  39. 39.280.2 ÷ 100 =
  40. 40.13.08 ÷ 1000 =

Answer key

  1. 1219
  2. 0.4798
  3. 48610
  4. 0.2731
  5. 1.27
  6. 0.00379
  7. 44.02
  8. 215200
  9. 447.2
  10. 20.71
  11. 2.378
  12. 86
  13. 3466
  14. 5.49
  15. 3325
  16. 1.181
  17. 363.8
  18. 58400
  19. 357.3
  20. 3958
  21. 2.115
  22. 0.01442
  23. 111
  24. 0.3762
  25. 12710
  26. 2.265
  27. 2170
  28. 182100
  29. 31.21
  30. 230.8
  31. 401.1
  32. 2692
  33. 18110
  34. 4.667
  35. 673
  36. 4127
  37. 44.09
  38. 280100
  39. 2.802
  40. 0.01308

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