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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 189 · 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. 1.13.93 × 10 =
  2. 2.130.2 × 10 =
  3. 3.483.5 ÷ 10 =
  4. 4.45.1 ÷ 1000 =
  5. 5.6.57 ÷ 1000 =
  6. 6.459.5 × 10 =
  7. 7.28.69 × 100 =
  8. 8.306.4 × 10 =
  9. 9.250.9 ÷ 10 =
  10. 10.23.45 ÷ 10 =
  11. 11.17.4 ÷ 100 =
  12. 12.97.4 ÷ 10 =
  13. 13.29.21 × 10 =
  14. 14.319.5 × 100 =
  15. 15.28.26 ÷ 100 =
  16. 16.11.3 ÷ 10 =
  17. 17.75.2 × 1000 =
  18. 18.5.75 ÷ 100 =
  19. 19.415.4 ÷ 1000 =
  20. 20.32.14 × 100 =
  21. 21.39.42 ÷ 100 =
  22. 22.29.92 ÷ 100 =
  23. 23.21.31 × 100 =
  24. 24.12.49 × 1000 =
  25. 25.0.23 ÷ 100 =
  26. 26.458.4 × 100 =
  27. 27.361.4 × 10 =
  28. 28.18.24 ÷ 1000 =
  29. 29.249.5 × 10 =
  30. 30.10.11 ÷ 10 =
  31. 31.23.18 × 10 =
  32. 32.236.1 ÷ 10 =
  33. 33.151.1 ÷ 1000 =
  34. 34.43.71 × 100 =
  35. 35.473.8 × 1000 =
  36. 36.242.6 × 1000 =
  37. 37.181.4 × 100 =
  38. 38.10.59 × 10 =
  39. 39.158.1 × 100 =
  40. 40.192.6 ÷ 100 =

Answer key

  1. 139.3
  2. 1302
  3. 48.35
  4. 0.0451
  5. 0.00657
  6. 4595
  7. 2869
  8. 3064
  9. 25.09
  10. 2.345
  11. 0.174
  12. 9.74
  13. 292.1
  14. 31950
  15. 0.2826
  16. 1.13
  17. 75200
  18. 0.0575
  19. 0.4154
  20. 3214
  21. 0.3942
  22. 0.2992
  23. 2131
  24. 12490
  25. 0.0023
  26. 45840
  27. 3614
  28. 0.01824
  29. 2495
  30. 1.011
  31. 231.8
  32. 23.61
  33. 0.1511
  34. 4371
  35. 473800
  36. 242600
  37. 18140
  38. 105.9
  39. 15810
  40. 1.926

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