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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 410 · 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. 1.385.4 × 10 =
  2. 2.90.9 × 10 =
  3. 3.8.91 ÷ 10 =
  4. 4.117.5 × 10 =
  5. 5.7.92 ÷ 10 =
  6. 6.1.94 × 1000 =
  7. 7.193.9 × 1000 =
  8. 8.386.6 × 10 =
  9. 9.32.42 × 10 =
  10. 10.166.1 × 10 =
  11. 11.397.1 × 1000 =
  12. 12.48.99 ÷ 1000 =
  13. 13.289.4 ÷ 10 =
  14. 14.26.1 × 10 =
  15. 15.2.65 × 1000 =
  16. 16.327.1 × 10 =
  17. 17.424.4 ÷ 10 =
  18. 18.63.1 ÷ 1000 =
  19. 19.52.8 ÷ 1000 =
  20. 20.44.78 × 10 =
  21. 21.11.34 × 1000 =
  22. 22.343.5 ÷ 10 =
  23. 23.355.9 × 100 =
  24. 24.21.67 × 10 =
  25. 25.202.8 ÷ 1000 =
  26. 26.447.5 × 100 =
  27. 27.15.95 ÷ 1000 =
  28. 28.396.4 ÷ 1000 =
  29. 29.16.97 ÷ 10 =
  30. 30.7.42 × 10 =
  31. 31.192.4 ÷ 10 =
  32. 32.34.13 ÷ 100 =
  33. 33.33.38 ÷ 1000 =
  34. 34.376.1 × 1000 =
  35. 35.307.9 × 10 =
  36. 36.322.6 ÷ 1000 =
  37. 37.4.82 ÷ 10 =
  38. 38.32.18 ÷ 1000 =
  39. 39.27.73 ÷ 10 =
  40. 40.3.21 ÷ 100 =

Answer key

  1. 3854
  2. 909
  3. 0.891
  4. 1175
  5. 0.792
  6. 1940
  7. 193900
  8. 3866
  9. 324.2
  10. 1661
  11. 397100
  12. 0.04899
  13. 28.94
  14. 261
  15. 2650
  16. 3271
  17. 42.44
  18. 0.0631
  19. 0.0528
  20. 447.8
  21. 11340
  22. 34.35
  23. 35590
  24. 216.7
  25. 0.2028
  26. 44750
  27. 0.01595
  28. 0.3964
  29. 1.697
  30. 74.2
  31. 19.24
  32. 0.3413
  33. 0.03338
  34. 376100
  35. 3079
  36. 0.3226
  37. 0.482
  38. 0.03218
  39. 2.773
  40. 0.0321

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