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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 144 · 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. 1.357.9 × 1000 =
  2. 2.100.2 ÷ 100 =
  3. 3.4.08 ÷ 1000 =
  4. 4.5.98 × 10 =
  5. 5.30.34 × 10 =
  6. 6.38.31 × 1000 =
  7. 7.5.49 ÷ 1000 =
  8. 8.126.1 ÷ 1000 =
  9. 9.98.8 × 100 =
  10. 10.33.78 × 10 =
  11. 11.60.1 × 10 =
  12. 12.212.1 ÷ 100 =
  13. 13.274.4 × 10 =
  14. 14.60.3 × 10 =
  15. 15.386.8 × 10 =
  16. 16.2.12 ÷ 10 =
  17. 17.27.03 × 10 =
  18. 18.27.92 × 1000 =
  19. 19.164.6 ÷ 100 =
  20. 20.19.86 × 1000 =
  21. 21.7.06 ÷ 10 =
  22. 22.3.02 ÷ 1000 =
  23. 23.365.3 × 1000 =
  24. 24.4.05 ÷ 100 =
  25. 25.328.3 ÷ 10 =
  26. 26.127.2 × 10 =
  27. 27.43.99 ÷ 100 =
  28. 28.43.77 ÷ 10 =
  29. 29.443.1 × 10 =
  30. 30.209.2 × 10 =
  31. 31.216.2 ÷ 10 =
  32. 32.6.21 ÷ 10 =
  33. 33.247.5 × 1000 =
  34. 34.284.3 × 10 =
  35. 35.22.94 × 10 =
  36. 36.24.84 × 1000 =
  37. 37.49.67 × 10 =
  38. 38.254.3 ÷ 1000 =
  39. 39.364.7 × 100 =
  40. 40.289.9 × 100 =

Answer key

  1. 357900
  2. 1.002
  3. 0.00408
  4. 59.8
  5. 303.4
  6. 38310
  7. 0.00549
  8. 0.1261
  9. 9880
  10. 337.8
  11. 601
  12. 2.121
  13. 2744
  14. 603
  15. 3868
  16. 0.212
  17. 270.3
  18. 27920
  19. 1.646
  20. 19860
  21. 0.706
  22. 0.00302
  23. 365300
  24. 0.0405
  25. 32.83
  26. 1272
  27. 0.4399
  28. 4.377
  29. 4431
  30. 2092
  31. 21.62
  32. 0.621
  33. 247500
  34. 2843
  35. 229.4
  36. 24840
  37. 496.7
  38. 0.2543
  39. 36470
  40. 28990

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