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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 411 · 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. 1.21.6 × 1000 =
  2. 2.8.15 ÷ 100 =
  3. 3.32.62 ÷ 10 =
  4. 4.129.7 × 10 =
  5. 5.1.41 × 10 =
  6. 6.114.1 × 10 =
  7. 7.437.5 × 10 =
  8. 8.181.1 ÷ 1000 =
  9. 9.78.5 × 10 =
  10. 10.0.73 ÷ 10 =
  11. 11.447.3 × 1000 =
  12. 12.11.23 × 100 =
  13. 13.420.1 × 1000 =
  14. 14.8.68 ÷ 100 =
  15. 15.487.2 ÷ 100 =
  16. 16.38.85 × 100 =
  17. 17.351.7 ÷ 100 =
  18. 18.286.1 ÷ 100 =
  19. 19.437.1 × 1000 =
  20. 20.48.31 ÷ 1000 =
  21. 21.318.1 × 100 =
  22. 22.22.72 × 1000 =
  23. 23.24.33 × 100 =
  24. 24.322.3 ÷ 100 =
  25. 25.34.21 × 10 =
  26. 26.35.11 ÷ 10 =
  27. 27.3.34 ÷ 1000 =
  28. 28.279.1 × 10 =
  29. 29.32.92 × 1000 =
  30. 30.23.21 ÷ 10 =
  31. 31.17.3 ÷ 1000 =
  32. 32.9.98 ÷ 100 =
  33. 33.351.1 ÷ 1000 =
  34. 34.36.39 ÷ 10 =
  35. 35.313.1 × 100 =
  36. 36.33.51 ÷ 100 =
  37. 37.1.32 × 1000 =
  38. 38.414.5 ÷ 10 =
  39. 39.288.1 × 100 =
  40. 40.32.5 ÷ 10 =

Answer key

  1. 21600
  2. 0.0815
  3. 3.262
  4. 1297
  5. 14.1
  6. 1141
  7. 4375
  8. 0.1811
  9. 785
  10. 0.073
  11. 447300
  12. 1123
  13. 420100
  14. 0.0868
  15. 4.872
  16. 3885
  17. 3.517
  18. 2.861
  19. 437100
  20. 0.04831
  21. 31810
  22. 22720
  23. 2433
  24. 3.223
  25. 342.1
  26. 3.511
  27. 0.00334
  28. 2791
  29. 32920
  30. 2.321
  31. 0.0173
  32. 0.0998
  33. 0.3511
  34. 3.639
  35. 31310
  36. 0.3351
  37. 1320
  38. 41.45
  39. 28810
  40. 3.25

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