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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 763 · 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. 1.265.3 × 10 =
  2. 2.23.2 ÷ 1000 =
  3. 3.21.9 × 100 =
  4. 4.29.36 ÷ 100 =
  5. 5.118.8 × 10 =
  6. 6.302.4 × 10 =
  7. 7.167.6 ÷ 10 =
  8. 8.49.04 × 100 =
  9. 9.37.48 ÷ 100 =
  10. 10.410.5 × 1000 =
  11. 11.38.07 × 10 =
  12. 12.176.3 × 10 =
  13. 13.301.7 ÷ 1000 =
  14. 14.407.4 ÷ 10 =
  15. 15.3.06 ÷ 100 =
  16. 16.429.6 ÷ 10 =
  17. 17.231.9 × 100 =
  18. 18.86.6 ÷ 1000 =
  19. 19.74.1 ÷ 100 =
  20. 20.373.1 × 1000 =
  21. 21.5.15 × 100 =
  22. 22.8.89 ÷ 1000 =
  23. 23.4.9 × 10 =
  24. 24.15.41 ÷ 100 =
  25. 25.427.1 ÷ 100 =
  26. 26.25.38 ÷ 100 =
  27. 27.16.49 × 10 =
  28. 28.24.26 × 1000 =
  29. 29.280.1 ÷ 10 =
  30. 30.459.8 × 100 =
  31. 31.21.17 × 100 =
  32. 32.91.1 ÷ 10 =
  33. 33.37.59 × 10 =
  34. 34.216.6 × 10 =
  35. 35.30.02 × 10 =
  36. 36.42.94 × 100 =
  37. 37.9.86 ÷ 10 =
  38. 38.76.1 × 10 =
  39. 39.332.7 × 10 =
  40. 40.23.08 × 1000 =

Answer key

  1. 2653
  2. 0.0232
  3. 2190
  4. 0.2936
  5. 1188
  6. 3024
  7. 16.76
  8. 4904
  9. 0.3748
  10. 410500
  11. 380.7
  12. 1763
  13. 0.3017
  14. 40.74
  15. 0.0306
  16. 42.96
  17. 23190
  18. 0.0866
  19. 0.741
  20. 373100
  21. 515
  22. 0.00889
  23. 49
  24. 0.1541
  25. 4.271
  26. 0.2538
  27. 164.9
  28. 24260
  29. 28.01
  30. 45980
  31. 2117
  32. 9.11
  33. 375.9
  34. 2166
  35. 300.2
  36. 4294
  37. 0.986
  38. 761
  39. 3327
  40. 23080

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