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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 413 · 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. 1.406.4 ÷ 100 =
  2. 2.26.9 ÷ 10 =
  3. 3.16.69 × 100 =
  4. 4.334.1 × 10 =
  5. 5.300.9 × 10 =
  6. 6.498.7 ÷ 100 =
  7. 7.477.2 × 1000 =
  8. 8.7.47 × 100 =
  9. 9.16.16 × 1000 =
  10. 10.48.82 ÷ 10 =
  11. 11.4.2 × 10 =
  12. 12.396.3 × 10 =
  13. 13.391.6 ÷ 1000 =
  14. 14.13.41 ÷ 1000 =
  15. 15.29.3 × 10 =
  16. 16.34.54 ÷ 1000 =
  17. 17.31.71 ÷ 10 =
  18. 18.402.3 ÷ 100 =
  19. 19.40.08 ÷ 10 =
  20. 20.18.65 × 100 =
  21. 21.317.3 × 100 =
  22. 22.1.63 ÷ 10 =
  23. 23.20.92 ÷ 1000 =
  24. 24.76.1 × 100 =
  25. 25.444.9 × 100 =
  26. 26.44.49 ÷ 10 =
  27. 27.199.8 × 1000 =
  28. 28.34.93 × 1000 =
  29. 29.6.06 × 1000 =
  30. 30.219.6 ÷ 1000 =
  31. 31.36.11 × 100 =
  32. 32.28.18 × 10 =
  33. 33.55.1 × 1000 =
  34. 34.44.21 × 100 =
  35. 35.48.29 × 10 =
  36. 36.48.29 × 100 =
  37. 37.23.74 × 100 =
  38. 38.6.25 ÷ 1000 =
  39. 39.150.7 ÷ 10 =
  40. 40.36.71 × 10 =

Answer key

  1. 4.064
  2. 2.69
  3. 1669
  4. 3341
  5. 3009
  6. 4.987
  7. 477200
  8. 747
  9. 16160
  10. 4.882
  11. 42
  12. 3963
  13. 0.3916
  14. 0.01341
  15. 293
  16. 0.03454
  17. 3.171
  18. 4.023
  19. 4.008
  20. 1865
  21. 31730
  22. 0.163
  23. 0.02092
  24. 7610
  25. 44490
  26. 4.449
  27. 199800
  28. 34930
  29. 6060
  30. 0.2196
  31. 3611
  32. 281.8
  33. 55100
  34. 4421
  35. 482.9
  36. 4829
  37. 2374
  38. 0.00625
  39. 15.07
  40. 367.1

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