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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 738 · 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. 1.29.88 × 1000 =
  2. 2.40.62 × 100 =
  3. 3.322.8 ÷ 10 =
  4. 4.11.23 × 10 =
  5. 5.177.1 × 10 =
  6. 6.409.1 ÷ 1000 =
  7. 7.167.4 ÷ 1000 =
  8. 8.301.5 ÷ 10 =
  9. 9.96.3 × 10 =
  10. 10.8.44 ÷ 1000 =
  11. 11.215.9 ÷ 100 =
  12. 12.321.5 ÷ 10 =
  13. 13.20.99 × 10 =
  14. 14.350.9 × 1000 =
  15. 15.20.55 ÷ 10 =
  16. 16.262.8 × 10 =
  17. 17.471.7 × 10 =
  18. 18.47.12 ÷ 10 =
  19. 19.26.46 ÷ 1000 =
  20. 20.17.93 ÷ 1000 =
  21. 21.282.4 ÷ 10 =
  22. 22.84.5 ÷ 10 =
  23. 23.205.2 ÷ 10 =
  24. 24.26.07 × 10 =
  25. 25.1.09 ÷ 100 =
  26. 26.48.96 × 100 =
  27. 27.22.93 ÷ 1000 =
  28. 28.22.29 × 1000 =
  29. 29.20.07 × 1000 =
  30. 30.31.58 ÷ 10 =
  31. 31.45.45 × 1000 =
  32. 32.70.1 × 10 =
  33. 33.264.3 × 1000 =
  34. 34.228.4 ÷ 1000 =
  35. 35.307.1 ÷ 100 =
  36. 36.6.04 ÷ 10 =
  37. 37.63.1 ÷ 100 =
  38. 38.23.41 ÷ 10 =
  39. 39.70.1 × 1000 =
  40. 40.24.02 × 10 =

Answer key

  1. 29880
  2. 4062
  3. 32.28
  4. 112.3
  5. 1771
  6. 0.4091
  7. 0.1674
  8. 30.15
  9. 963
  10. 0.00844
  11. 2.159
  12. 32.15
  13. 209.9
  14. 350900
  15. 2.055
  16. 2628
  17. 4717
  18. 4.712
  19. 0.02646
  20. 0.01793
  21. 28.24
  22. 8.45
  23. 20.52
  24. 260.7
  25. 0.0109
  26. 4896
  27. 0.02293
  28. 22290
  29. 20070
  30. 3.158
  31. 45450
  32. 701
  33. 264300
  34. 0.2284
  35. 3.071
  36. 0.604
  37. 0.631
  38. 2.341
  39. 70100
  40. 240.2

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