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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 62 · 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. 1.3.28 × 1000 =
  2. 2.0.41 ÷ 1000 =
  3. 3.442.2 × 10 =
  4. 4.419.2 ÷ 1000 =
  5. 5.112.5 × 1000 =
  6. 6.51.8 ÷ 100 =
  7. 7.13.51 ÷ 10 =
  8. 8.47.81 ÷ 1000 =
  9. 9.25.86 × 100 =
  10. 10.21.84 ÷ 1000 =
  11. 11.285.9 ÷ 100 =
  12. 12.0.42 ÷ 10 =
  13. 13.41.07 × 100 =
  14. 14.23.6 ÷ 100 =
  15. 15.1.72 ÷ 1000 =
  16. 16.51.1 ÷ 10 =
  17. 17.30.6 × 100 =
  18. 18.342.9 × 100 =
  19. 19.25.79 × 10 =
  20. 20.18.22 ÷ 10 =
  21. 21.283.5 × 1000 =
  22. 22.410.2 × 1000 =
  23. 23.6.7 ÷ 1000 =
  24. 24.29.24 ÷ 10 =
  25. 25.439.9 × 1000 =
  26. 26.45.1 ÷ 1000 =
  27. 27.150.1 × 100 =
  28. 28.35.92 × 100 =
  29. 29.27.86 × 100 =
  30. 30.22.37 × 1000 =
  31. 31.61.2 × 100 =
  32. 32.252.4 × 10 =
  33. 33.79.7 ÷ 10 =
  34. 34.115.2 × 10 =
  35. 35.14.01 × 100 =
  36. 36.177.9 × 10 =
  37. 37.29.58 ÷ 100 =
  38. 38.46.33 ÷ 10 =
  39. 39.7.7 ÷ 10 =
  40. 40.36.15 ÷ 10 =

Answer key

  1. 3280
  2. 0.00041
  3. 4422
  4. 0.4192
  5. 112500
  6. 0.518
  7. 1.351
  8. 0.04781
  9. 2586
  10. 0.02184
  11. 2.859
  12. 0.042
  13. 4107
  14. 0.236
  15. 0.00172
  16. 5.11
  17. 3060
  18. 34290
  19. 257.9
  20. 1.822
  21. 283500
  22. 410200
  23. 0.0067
  24. 2.924
  25. 439900
  26. 0.0451
  27. 15010
  28. 3592
  29. 2786
  30. 22370
  31. 6120
  32. 2524
  33. 7.97
  34. 1152
  35. 1401
  36. 1779
  37. 0.2958
  38. 4.633
  39. 0.77
  40. 3.615

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