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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 754 · 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. 1.32.22 × 1000 =
  2. 2.22.81 ÷ 10 =
  3. 3.21.71 × 1000 =
  4. 4.3.56 ÷ 100 =
  5. 5.166.5 × 100 =
  6. 6.35.84 × 10 =
  7. 7.15.8 ÷ 10 =
  8. 8.34.21 ÷ 1000 =
  9. 9.3.4 × 100 =
  10. 10.280.3 × 1000 =
  11. 11.10.01 × 10 =
  12. 12.406.1 × 10 =
  13. 13.33.07 × 10 =
  14. 14.27.53 ÷ 100 =
  15. 15.19.66 × 10 =
  16. 16.444.6 ÷ 100 =
  17. 17.21.16 × 10 =
  18. 18.40.1 ÷ 1000 =
  19. 19.233.2 ÷ 1000 =
  20. 20.109.3 × 1000 =
  21. 21.400.1 × 100 =
  22. 22.10.41 ÷ 1000 =
  23. 23.419.6 ÷ 1000 =
  24. 24.76.7 ÷ 10 =
  25. 25.232.6 ÷ 1000 =
  26. 26.8.79 ÷ 1000 =
  27. 27.234.3 ÷ 10 =
  28. 28.7.74 × 1000 =
  29. 29.24.5 × 100 =
  30. 30.21.98 ÷ 1000 =
  31. 31.295.7 × 10 =
  32. 32.421.1 ÷ 10 =
  33. 33.7.88 × 10 =
  34. 34.184.8 ÷ 10 =
  35. 35.129.1 ÷ 10 =
  36. 36.76.5 ÷ 10 =
  37. 37.45.56 ÷ 100 =
  38. 38.206.4 ÷ 10 =
  39. 39.87.8 ÷ 10 =
  40. 40.12.2 × 100 =

Answer key

  1. 32220
  2. 2.281
  3. 21710
  4. 0.0356
  5. 16650
  6. 358.4
  7. 1.58
  8. 0.03421
  9. 340
  10. 280300
  11. 100.1
  12. 4061
  13. 330.7
  14. 0.2753
  15. 196.6
  16. 4.446
  17. 211.6
  18. 0.0401
  19. 0.2332
  20. 109300
  21. 40010
  22. 0.01041
  23. 0.4196
  24. 7.67
  25. 0.2326
  26. 0.00879
  27. 23.43
  28. 7740
  29. 2450
  30. 0.02198
  31. 2957
  32. 42.11
  33. 78.8
  34. 18.48
  35. 12.91
  36. 7.65
  37. 0.4556
  38. 20.64
  39. 8.78
  40. 1220

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