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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 720 · 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. 1.446.2 × 10 =
  2. 2.35.43 ÷ 1000 =
  3. 3.305.7 ÷ 100 =
  4. 4.24.39 ÷ 1000 =
  5. 5.45.57 ÷ 10 =
  6. 6.385.9 × 100 =
  7. 7.34.15 ÷ 1000 =
  8. 8.92.1 × 1000 =
  9. 9.215.6 ÷ 100 =
  10. 10.467.8 × 100 =
  11. 11.13.06 ÷ 10 =
  12. 12.28.05 × 100 =
  13. 13.404.1 ÷ 10 =
  14. 14.206.1 × 1000 =
  15. 15.32.93 ÷ 1000 =
  16. 16.10.29 ÷ 1000 =
  17. 17.198.7 ÷ 1000 =
  18. 18.32.86 ÷ 10 =
  19. 19.23.69 × 10 =
  20. 20.113.8 ÷ 1000 =
  21. 21.167.6 ÷ 100 =
  22. 22.42.53 ÷ 10 =
  23. 23.5.73 × 100 =
  24. 24.324.7 ÷ 100 =
  25. 25.12.79 ÷ 10 =
  26. 26.98.5 × 10 =
  27. 27.60.3 × 10 =
  28. 28.395.7 ÷ 10 =
  29. 29.40.05 × 1000 =
  30. 30.39.82 ÷ 1000 =
  31. 31.9.88 ÷ 1000 =
  32. 32.32.73 ÷ 100 =
  33. 33.463.8 ÷ 10 =
  34. 34.281.7 ÷ 1000 =
  35. 35.103.6 ÷ 10 =
  36. 36.86.3 ÷ 1000 =
  37. 37.311.1 ÷ 100 =
  38. 38.28.35 ÷ 100 =
  39. 39.164.1 × 1000 =
  40. 40.10.11 ÷ 10 =

Answer key

  1. 4462
  2. 0.03543
  3. 3.057
  4. 0.02439
  5. 4.557
  6. 38590
  7. 0.03415
  8. 92100
  9. 2.156
  10. 46780
  11. 1.306
  12. 2805
  13. 40.41
  14. 206100
  15. 0.03293
  16. 0.01029
  17. 0.1987
  18. 3.286
  19. 236.9
  20. 0.1138
  21. 1.676
  22. 4.253
  23. 573
  24. 3.247
  25. 1.279
  26. 985
  27. 603
  28. 39.57
  29. 40050
  30. 0.03982
  31. 0.00988
  32. 0.3273
  33. 46.38
  34. 0.2817
  35. 10.36
  36. 0.0863
  37. 3.111
  38. 0.2835
  39. 164100
  40. 1.011

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