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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 337 · 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. 1.46.78 × 10 =
  2. 2.482.6 ÷ 1000 =
  3. 3.12.6 × 10 =
  4. 4.44.47 × 10 =
  5. 5.1.93 ÷ 10 =
  6. 6.8.47 × 100 =
  7. 7.374.7 ÷ 100 =
  8. 8.19.78 × 10 =
  9. 9.25.77 × 1000 =
  10. 10.36.7 × 10 =
  11. 11.5.48 ÷ 100 =
  12. 12.3.76 × 1000 =
  13. 13.333.1 × 10 =
  14. 14.25.71 ÷ 1000 =
  15. 15.230.4 ÷ 1000 =
  16. 16.416.2 × 100 =
  17. 17.260.8 ÷ 100 =
  18. 18.353.1 × 1000 =
  19. 19.28.45 × 1000 =
  20. 20.17.64 ÷ 10 =
  21. 21.148.2 × 10 =
  22. 22.10.81 × 100 =
  23. 23.277.2 × 100 =
  24. 24.18.31 × 10 =
  25. 25.71.4 × 10 =
  26. 26.298.3 × 10 =
  27. 27.274.1 × 100 =
  28. 28.36.45 ÷ 100 =
  29. 29.31.63 × 100 =
  30. 30.155.1 ÷ 10 =
  31. 31.3.59 ÷ 100 =
  32. 32.117.1 ÷ 100 =
  33. 33.22.58 × 10 =
  34. 34.3.62 ÷ 10 =
  35. 35.252.4 ÷ 100 =
  36. 36.6.29 × 100 =
  37. 37.25.91 × 1000 =
  38. 38.322.2 × 100 =
  39. 39.47.32 ÷ 100 =
  40. 40.14.57 × 10 =

Answer key

  1. 467.8
  2. 0.4826
  3. 126
  4. 444.7
  5. 0.193
  6. 847
  7. 3.747
  8. 197.8
  9. 25770
  10. 367
  11. 0.0548
  12. 3760
  13. 3331
  14. 0.02571
  15. 0.2304
  16. 41620
  17. 2.608
  18. 353100
  19. 28450
  20. 1.764
  21. 1482
  22. 1081
  23. 27720
  24. 183.1
  25. 714
  26. 2983
  27. 27410
  28. 0.3645
  29. 3163
  30. 15.51
  31. 0.0359
  32. 1.171
  33. 225.8
  34. 0.362
  35. 2.524
  36. 629
  37. 25910
  38. 32220
  39. 0.4732
  40. 145.7

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