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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 787 · 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. 1.29.83 × 1000 =
  2. 2.399.3 × 1000 =
  3. 3.181.9 × 10 =
  4. 4.13.21 × 10 =
  5. 5.329.1 ÷ 1000 =
  6. 6.14.79 ÷ 1000 =
  7. 7.134.1 × 10 =
  8. 8.220.4 × 1000 =
  9. 9.251.5 ÷ 10 =
  10. 10.43.01 ÷ 10 =
  11. 11.18.9 × 10 =
  12. 12.355.4 ÷ 100 =
  13. 13.425.1 × 1000 =
  14. 14.18.21 × 10 =
  15. 15.460.1 ÷ 10 =
  16. 16.43.99 × 10 =
  17. 17.5.42 × 1000 =
  18. 18.128.1 ÷ 1000 =
  19. 19.17.77 × 1000 =
  20. 20.34.06 ÷ 10 =
  21. 21.146.9 × 100 =
  22. 22.13.49 × 1000 =
  23. 23.4.69 × 1000 =
  24. 24.23.32 × 1000 =
  25. 25.33.2 ÷ 1000 =
  26. 26.16.38 × 100 =
  27. 27.219.1 × 1000 =
  28. 28.416.8 ÷ 100 =
  29. 29.174.1 × 100 =
  30. 30.3.02 × 10 =
  31. 31.38.72 ÷ 10 =
  32. 32.33.22 × 100 =
  33. 33.4.89 ÷ 1000 =
  34. 34.204.6 ÷ 10 =
  35. 35.76.1 × 100 =
  36. 36.421.8 ÷ 10 =
  37. 37.31.61 ÷ 1000 =
  38. 38.441.4 × 100 =
  39. 39.173.8 ÷ 100 =
  40. 40.155.3 × 1000 =

Answer key

  1. 29830
  2. 399300
  3. 1819
  4. 132.1
  5. 0.3291
  6. 0.01479
  7. 1341
  8. 220400
  9. 25.15
  10. 4.301
  11. 189
  12. 3.554
  13. 425100
  14. 182.1
  15. 46.01
  16. 439.9
  17. 5420
  18. 0.1281
  19. 17770
  20. 3.406
  21. 14690
  22. 13490
  23. 4690
  24. 23320
  25. 0.0332
  26. 1638
  27. 219100
  28. 4.168
  29. 17410
  30. 30.2
  31. 3.872
  32. 3322
  33. 0.00489
  34. 20.46
  35. 7610
  36. 42.18
  37. 0.03161
  38. 44140
  39. 1.738
  40. 155300

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