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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 428 · 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. 1.37.7 ÷ 1000 =
  2. 2.36.51 × 10 =
  3. 3.308.7 × 10 =
  4. 4.97.5 × 10 =
  5. 5.43.25 × 10 =
  6. 6.34.28 ÷ 1000 =
  7. 7.1.29 × 10 =
  8. 8.31.24 ÷ 1000 =
  9. 9.18.1 ÷ 1000 =
  10. 10.273.1 ÷ 100 =
  11. 11.47.82 ÷ 1000 =
  12. 12.48.3 × 1000 =
  13. 13.331.5 × 10 =
  14. 14.303.7 ÷ 10 =
  15. 15.14.89 × 100 =
  16. 16.6.21 ÷ 1000 =
  17. 17.65.1 ÷ 100 =
  18. 18.11.4 × 100 =
  19. 19.282.5 × 10 =
  20. 20.354.1 × 100 =
  21. 21.497.6 ÷ 1000 =
  22. 22.73.1 ÷ 1000 =
  23. 23.7.34 × 1000 =
  24. 24.423.6 × 1000 =
  25. 25.45.55 × 10 =
  26. 26.142.4 × 10 =
  27. 27.43.04 × 1000 =
  28. 28.28.01 ÷ 100 =
  29. 29.6.73 ÷ 1000 =
  30. 30.40.69 × 10 =
  31. 31.2.62 × 10 =
  32. 32.18.65 × 10 =
  33. 33.493.9 × 1000 =
  34. 34.0.44 × 1000 =
  35. 35.255.5 ÷ 10 =
  36. 36.32.21 ÷ 10 =
  37. 37.49.79 ÷ 1000 =
  38. 38.131.2 × 1000 =
  39. 39.27.16 × 10 =
  40. 40.315.6 ÷ 100 =

Answer key

  1. 0.0377
  2. 365.1
  3. 3087
  4. 975
  5. 432.5
  6. 0.03428
  7. 12.9
  8. 0.03124
  9. 0.0181
  10. 2.731
  11. 0.04782
  12. 48300
  13. 3315
  14. 30.37
  15. 1489
  16. 0.00621
  17. 0.651
  18. 1140
  19. 2825
  20. 35410
  21. 0.4976
  22. 0.0731
  23. 7340
  24. 423600
  25. 455.5
  26. 1424
  27. 43040
  28. 0.2801
  29. 0.00673
  30. 406.9
  31. 26.2
  32. 186.5
  33. 493900
  34. 440
  35. 25.55
  36. 3.221
  37. 0.04979
  38. 131200
  39. 271.6
  40. 3.156

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