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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 105 · 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. 1.103.1 ÷ 10 =
  2. 2.267.3 ÷ 100 =
  3. 3.41.79 × 100 =
  4. 4.47.32 ÷ 10 =
  5. 5.16.94 × 100 =
  6. 6.272.2 × 10 =
  7. 7.68.9 ÷ 1000 =
  8. 8.23.85 ÷ 100 =
  9. 9.31.11 × 100 =
  10. 10.149.9 ÷ 100 =
  11. 11.403.6 × 1000 =
  12. 12.246.4 × 1000 =
  13. 13.271.2 ÷ 1000 =
  14. 14.41.8 ÷ 1000 =
  15. 15.83.2 × 10 =
  16. 16.4.01 ÷ 10 =
  17. 17.4.88 ÷ 10 =
  18. 18.6.95 ÷ 10 =
  19. 19.255.9 ÷ 1000 =
  20. 20.11.51 × 1000 =
  21. 21.289.2 × 100 =
  22. 22.57.3 × 100 =
  23. 23.275.5 × 10 =
  24. 24.331.3 ÷ 1000 =
  25. 25.41.31 × 100 =
  26. 26.11.71 × 10 =
  27. 27.256.1 × 100 =
  28. 28.26.31 × 100 =
  29. 29.288.1 × 1000 =
  30. 30.345.1 ÷ 100 =
  31. 31.11.91 ÷ 1000 =
  32. 32.153.8 ÷ 100 =
  33. 33.117.9 × 100 =
  34. 34.233.3 × 1000 =
  35. 35.10.31 ÷ 10 =
  36. 36.433.8 × 1000 =
  37. 37.21.53 × 100 =
  38. 38.254.2 × 10 =
  39. 39.7.6 × 100 =
  40. 40.49.13 ÷ 1000 =

Answer key

  1. 10.31
  2. 2.673
  3. 4179
  4. 4.732
  5. 1694
  6. 2722
  7. 0.0689
  8. 0.2385
  9. 3111
  10. 1.499
  11. 403600
  12. 246400
  13. 0.2712
  14. 0.0418
  15. 832
  16. 0.401
  17. 0.488
  18. 0.695
  19. 0.2559
  20. 11510
  21. 28920
  22. 5730
  23. 2755
  24. 0.3313
  25. 4131
  26. 117.1
  27. 25610
  28. 2631
  29. 288100
  30. 3.451
  31. 0.01191
  32. 1.538
  33. 11790
  34. 233300
  35. 1.031
  36. 433800
  37. 2153
  38. 2542
  39. 760
  40. 0.04913

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