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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 815 · 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. 1.15.26 × 1000 =
  2. 2.267.8 × 1000 =
  3. 3.42.01 × 10 =
  4. 4.24.9 × 100 =
  5. 5.8.38 ÷ 1000 =
  6. 6.213.9 ÷ 1000 =
  7. 7.43.44 × 10 =
  8. 8.162.1 ÷ 100 =
  9. 9.30.42 × 10 =
  10. 10.17.28 ÷ 1000 =
  11. 11.6.22 × 10 =
  12. 12.399.5 × 100 =
  13. 13.35.03 × 10 =
  14. 14.16.81 ÷ 10 =
  15. 15.11.02 ÷ 10 =
  16. 16.218.4 ÷ 1000 =
  17. 17.43.35 × 10 =
  18. 18.34.01 ÷ 10 =
  19. 19.423.6 × 100 =
  20. 20.35.96 × 100 =
  21. 21.113.9 × 1000 =
  22. 22.49.15 × 10 =
  23. 23.38.13 ÷ 1000 =
  24. 24.389.7 ÷ 10 =
  25. 25.90.4 × 1000 =
  26. 26.41.9 × 100 =
  27. 27.272.3 ÷ 100 =
  28. 28.12.12 × 10 =
  29. 29.5.12 × 100 =
  30. 30.412.4 ÷ 1000 =
  31. 31.54.8 × 10 =
  32. 32.120.7 × 100 =
  33. 33.177.4 ÷ 10 =
  34. 34.49.2 ÷ 10 =
  35. 35.29.6 ÷ 100 =
  36. 36.21.41 × 10 =
  37. 37.3.9 ÷ 1000 =
  38. 38.22.31 × 100 =
  39. 39.427.6 × 100 =
  40. 40.31.92 × 100 =

Answer key

  1. 15260
  2. 267800
  3. 420.1
  4. 2490
  5. 0.00838
  6. 0.2139
  7. 434.4
  8. 1.621
  9. 304.2
  10. 0.01728
  11. 62.2
  12. 39950
  13. 350.3
  14. 1.681
  15. 1.102
  16. 0.2184
  17. 433.5
  18. 3.401
  19. 42360
  20. 3596
  21. 113900
  22. 491.5
  23. 0.03813
  24. 38.97
  25. 90400
  26. 4190
  27. 2.723
  28. 121.2
  29. 512
  30. 0.4124
  31. 548
  32. 12070
  33. 17.74
  34. 4.92
  35. 0.296
  36. 214.1
  37. 0.0039
  38. 2231
  39. 42760
  40. 3192

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