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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 465 · 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. 1.2.76 × 10 =
  2. 2.28.23 ÷ 1000 =
  3. 3.102.3 × 100 =
  4. 4.27.88 ÷ 10 =
  5. 5.12.91 ÷ 1000 =
  6. 6.8.75 × 1000 =
  7. 7.34.98 × 1000 =
  8. 8.349.6 × 10 =
  9. 9.450.5 ÷ 1000 =
  10. 10.55.6 × 100 =
  11. 11.473.6 ÷ 1000 =
  12. 12.232.2 ÷ 10 =
  13. 13.50.9 × 100 =
  14. 14.34.3 × 1000 =
  15. 15.322.9 × 100 =
  16. 16.23.87 × 1000 =
  17. 17.70.5 ÷ 10 =
  18. 18.471.1 ÷ 10 =
  19. 19.9.7 ÷ 10 =
  20. 20.372.3 ÷ 1000 =
  21. 21.417.8 × 1000 =
  22. 22.462.1 × 10 =
  23. 23.70.3 × 100 =
  24. 24.295.3 × 100 =
  25. 25.15.12 × 1000 =
  26. 26.453.7 ÷ 10 =
  27. 27.13.47 ÷ 1000 =
  28. 28.3.91 ÷ 1000 =
  29. 29.11.26 ÷ 10 =
  30. 30.41.11 ÷ 10 =
  31. 31.45.7 × 1000 =
  32. 32.12.41 × 10 =
  33. 33.8.53 ÷ 100 =
  34. 34.196.1 × 1000 =
  35. 35.97.9 × 10 =
  36. 36.43.21 × 100 =
  37. 37.44.28 × 1000 =
  38. 38.145.9 × 10 =
  39. 39.11.12 × 100 =
  40. 40.5.81 ÷ 1000 =

Answer key

  1. 27.6
  2. 0.02823
  3. 10230
  4. 2.788
  5. 0.01291
  6. 8750
  7. 34980
  8. 3496
  9. 0.4505
  10. 5560
  11. 0.4736
  12. 23.22
  13. 5090
  14. 34300
  15. 32290
  16. 23870
  17. 7.05
  18. 47.11
  19. 0.97
  20. 0.3723
  21. 417800
  22. 4621
  23. 7030
  24. 29530
  25. 15120
  26. 45.37
  27. 0.01347
  28. 0.00391
  29. 1.126
  30. 4.111
  31. 45700
  32. 124.1
  33. 0.0853
  34. 196100
  35. 979
  36. 4321
  37. 44280
  38. 1459
  39. 1112
  40. 0.00581

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