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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 475 · 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. 1.33.1 × 1000 =
  2. 2.496.1 × 100 =
  3. 3.37.85 ÷ 100 =
  4. 4.135.3 × 100 =
  5. 5.43.17 ÷ 100 =
  6. 6.486.9 ÷ 10 =
  7. 7.119.6 ÷ 100 =
  8. 8.10.9 ÷ 1000 =
  9. 9.13.21 ÷ 1000 =
  10. 10.18.35 ÷ 1000 =
  11. 11.18.5 × 100 =
  12. 12.223.9 ÷ 1000 =
  13. 13.9.07 ÷ 100 =
  14. 14.34.96 × 100 =
  15. 15.0.32 ÷ 1000 =
  16. 16.25.92 ÷ 1000 =
  17. 17.86.8 × 1000 =
  18. 18.4.03 ÷ 100 =
  19. 19.13.96 × 10 =
  20. 20.29.81 ÷ 10 =
  21. 21.413.9 × 100 =
  22. 22.143.9 × 100 =
  23. 23.30.01 ÷ 10 =
  24. 24.12.1 × 100 =
  25. 25.138.6 × 1000 =
  26. 26.140.1 ÷ 10 =
  27. 27.38.27 ÷ 1000 =
  28. 28.4.38 ÷ 10 =
  29. 29.26.67 ÷ 1000 =
  30. 30.30.1 × 1000 =
  31. 31.30.84 × 10 =
  32. 32.160.7 ÷ 10 =
  33. 33.21.26 × 1000 =
  34. 34.44.4 × 10 =
  35. 35.140.1 × 100 =
  36. 36.10.28 × 10 =
  37. 37.300.6 × 1000 =
  38. 38.494.7 × 10 =
  39. 39.17.64 × 10 =
  40. 40.319.5 ÷ 100 =

Answer key

  1. 33100
  2. 49610
  3. 0.3785
  4. 13530
  5. 0.4317
  6. 48.69
  7. 1.196
  8. 0.0109
  9. 0.01321
  10. 0.01835
  11. 1850
  12. 0.2239
  13. 0.0907
  14. 3496
  15. 0.00032
  16. 0.02592
  17. 86800
  18. 0.0403
  19. 139.6
  20. 2.981
  21. 41390
  22. 14390
  23. 3.001
  24. 1210
  25. 138600
  26. 14.01
  27. 0.03827
  28. 0.438
  29. 0.02667
  30. 30100
  31. 308.4
  32. 16.07
  33. 21260
  34. 444
  35. 14010
  36. 102.8
  37. 300600
  38. 4947
  39. 176.4
  40. 3.195

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