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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 904 · 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. 1.14.63 ÷ 10 =
  2. 2.35.1 ÷ 1000 =
  3. 3.456.1 × 10 =
  4. 4.378.7 ÷ 10 =
  5. 5.31.13 × 100 =
  6. 6.24.07 × 100 =
  7. 7.496.7 ÷ 100 =
  8. 8.159.2 ÷ 1000 =
  9. 9.11.16 × 10 =
  10. 10.49.54 × 100 =
  11. 11.226.5 × 100 =
  12. 12.7.01 × 100 =
  13. 13.78.1 ÷ 100 =
  14. 14.163.9 ÷ 100 =
  15. 15.44.84 × 1000 =
  16. 16.267.9 × 10 =
  17. 17.47.12 × 10 =
  18. 18.51.8 × 10 =
  19. 19.20.5 × 100 =
  20. 20.102.1 × 100 =
  21. 21.6.14 × 10 =
  22. 22.22.86 ÷ 10 =
  23. 23.28.14 × 100 =
  24. 24.10.49 ÷ 10 =
  25. 25.393.9 × 1000 =
  26. 26.38.79 × 10 =
  27. 27.6.58 ÷ 10 =
  28. 28.15.78 × 10 =
  29. 29.91.6 ÷ 10 =
  30. 30.381.4 × 100 =
  31. 31.30.75 ÷ 10 =
  32. 32.360.8 ÷ 1000 =
  33. 33.16.68 × 1000 =
  34. 34.315.2 ÷ 10 =
  35. 35.460.5 × 1000 =
  36. 36.41.41 × 10 =
  37. 37.38.73 ÷ 100 =
  38. 38.224.4 ÷ 10 =
  39. 39.33.5 × 1000 =
  40. 40.85.2 × 1000 =

Answer key

  1. 1.463
  2. 0.0351
  3. 4561
  4. 37.87
  5. 3113
  6. 2407
  7. 4.967
  8. 0.1592
  9. 111.6
  10. 4954
  11. 22650
  12. 701
  13. 0.781
  14. 1.639
  15. 44840
  16. 2679
  17. 471.2
  18. 518
  19. 2050
  20. 10210
  21. 61.4
  22. 2.286
  23. 2814
  24. 1.049
  25. 393900
  26. 387.9
  27. 0.658
  28. 157.8
  29. 9.16
  30. 38140
  31. 3.075
  32. 0.3608
  33. 16680
  34. 31.52
  35. 460500
  36. 414.1
  37. 0.3873
  38. 22.44
  39. 33500
  40. 85200

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