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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 44 · 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. 1.413.1 × 10 =
  2. 2.30.62 × 100 =
  3. 3.41.31 ÷ 1000 =
  4. 4.30.25 ÷ 100 =
  5. 5.126.8 × 10 =
  6. 6.264.5 × 10 =
  7. 7.48.83 × 1000 =
  8. 8.3.29 × 10 =
  9. 9.45.18 × 100 =
  10. 10.121.8 × 10 =
  11. 11.102.4 × 100 =
  12. 12.3.65 × 10 =
  13. 13.37.55 × 1000 =
  14. 14.294.1 × 100 =
  15. 15.55.6 ÷ 100 =
  16. 16.29.8 × 100 =
  17. 17.50.3 × 100 =
  18. 18.326.4 ÷ 10 =
  19. 19.24.06 ÷ 100 =
  20. 20.14.35 ÷ 100 =
  21. 21.28.47 ÷ 10 =
  22. 22.296.9 × 10 =
  23. 23.1.63 × 100 =
  24. 24.408.4 × 10 =
  25. 25.323.6 ÷ 10 =
  26. 26.49.9 × 1000 =
  27. 27.176.1 × 10 =
  28. 28.120.1 × 1000 =
  29. 29.5.17 ÷ 10 =
  30. 30.2.51 × 100 =
  31. 31.7.21 ÷ 1000 =
  32. 32.20.58 ÷ 10 =
  33. 33.141.1 × 100 =
  34. 34.239.4 ÷ 100 =
  35. 35.7.09 ÷ 10 =
  36. 36.45.8 × 100 =
  37. 37.85.3 ÷ 10 =
  38. 38.10.09 ÷ 100 =
  39. 39.72.1 ÷ 10 =
  40. 40.10.5 ÷ 100 =

Answer key

  1. 4131
  2. 3062
  3. 0.04131
  4. 0.3025
  5. 1268
  6. 2645
  7. 48830
  8. 32.9
  9. 4518
  10. 1218
  11. 10240
  12. 36.5
  13. 37550
  14. 29410
  15. 0.556
  16. 2980
  17. 5030
  18. 32.64
  19. 0.2406
  20. 0.1435
  21. 2.847
  22. 2969
  23. 163
  24. 4084
  25. 32.36
  26. 49900
  27. 1761
  28. 120100
  29. 0.517
  30. 251
  31. 0.00721
  32. 2.058
  33. 14110
  34. 2.394
  35. 0.709
  36. 4580
  37. 8.53
  38. 0.1009
  39. 7.21
  40. 0.105

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