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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 689 · 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. 1.100.9 ÷ 10 =
  2. 2.40.93 × 1000 =
  3. 3.477.2 ÷ 1000 =
  4. 4.361.3 ÷ 10 =
  5. 5.392.1 × 100 =
  6. 6.4.11 × 100 =
  7. 7.296.3 ÷ 10 =
  8. 8.309.6 × 1000 =
  9. 9.125.1 × 100 =
  10. 10.265.4 × 10 =
  11. 11.30.89 × 1000 =
  12. 12.23.94 ÷ 100 =
  13. 13.39.64 × 10 =
  14. 14.490.1 ÷ 10 =
  15. 15.31.47 ÷ 10 =
  16. 16.26.26 × 10 =
  17. 17.464.5 × 10 =
  18. 18.10.68 × 1000 =
  19. 19.33.97 × 10 =
  20. 20.8.67 × 1000 =
  21. 21.14.51 ÷ 100 =
  22. 22.154.9 × 10 =
  23. 23.10.09 ÷ 1000 =
  24. 24.34.03 × 100 =
  25. 25.269.8 × 1000 =
  26. 26.22.49 × 10 =
  27. 27.180.1 × 100 =
  28. 28.13.98 ÷ 10 =
  29. 29.269.5 ÷ 1000 =
  30. 30.463.2 ÷ 10 =
  31. 31.1.32 ÷ 100 =
  32. 32.33.51 × 100 =
  33. 33.87.7 ÷ 1000 =
  34. 34.485.2 ÷ 10 =
  35. 35.11.07 ÷ 10 =
  36. 36.288.1 × 100 =
  37. 37.11.31 × 10 =
  38. 38.130.2 × 1000 =
  39. 39.9.29 ÷ 1000 =
  40. 40.39.99 × 1000 =

Answer key

  1. 10.09
  2. 40930
  3. 0.4772
  4. 36.13
  5. 39210
  6. 411
  7. 29.63
  8. 309600
  9. 12510
  10. 2654
  11. 30890
  12. 0.2394
  13. 396.4
  14. 49.01
  15. 3.147
  16. 262.6
  17. 4645
  18. 10680
  19. 339.7
  20. 8670
  21. 0.1451
  22. 1549
  23. 0.01009
  24. 3403
  25. 269800
  26. 224.9
  27. 18010
  28. 1.398
  29. 0.2695
  30. 46.32
  31. 0.0132
  32. 3351
  33. 0.0877
  34. 48.52
  35. 1.107
  36. 28810
  37. 113.1
  38. 130200
  39. 0.00929
  40. 39990

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