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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 809 · 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. 1.48.02 ÷ 100 =
  2. 2.19.93 × 100 =
  3. 3.9.52 ÷ 100 =
  4. 4.25.47 ÷ 100 =
  5. 5.391.3 ÷ 1000 =
  6. 6.73.9 × 100 =
  7. 7.450.8 × 10 =
  8. 8.16.24 × 100 =
  9. 9.24.49 ÷ 10 =
  10. 10.417.2 × 100 =
  11. 11.28.73 ÷ 10 =
  12. 12.190.7 × 1000 =
  13. 13.24.63 ÷ 100 =
  14. 14.345.2 × 10 =
  15. 15.17.7 × 1000 =
  16. 16.135.6 ÷ 10 =
  17. 17.91.1 ÷ 10 =
  18. 18.330.5 × 100 =
  19. 19.370.6 ÷ 1000 =
  20. 20.21.11 × 100 =
  21. 21.1.36 ÷ 10 =
  22. 22.313.4 × 1000 =
  23. 23.482.4 ÷ 100 =
  24. 24.28.2 ÷ 1000 =
  25. 25.474.7 × 10 =
  26. 26.37.95 ÷ 10 =
  27. 27.32.1 ÷ 1000 =
  28. 28.36.83 × 10 =
  29. 29.39.92 × 10 =
  30. 30.230.7 ÷ 100 =
  31. 31.43.74 × 10 =
  32. 32.21.91 ÷ 10 =
  33. 33.43.02 × 1000 =
  34. 34.286.4 × 1000 =
  35. 35.288.1 × 10 =
  36. 36.31.45 ÷ 1000 =
  37. 37.276.5 × 10 =
  38. 38.474.2 ÷ 1000 =
  39. 39.433.4 ÷ 10 =
  40. 40.42.81 ÷ 10 =

Answer key

  1. 0.4802
  2. 1993
  3. 0.0952
  4. 0.2547
  5. 0.3913
  6. 7390
  7. 4508
  8. 1624
  9. 2.449
  10. 41720
  11. 2.873
  12. 190700
  13. 0.2463
  14. 3452
  15. 17700
  16. 13.56
  17. 9.11
  18. 33050
  19. 0.3706
  20. 2111
  21. 0.136
  22. 313400
  23. 4.824
  24. 0.0282
  25. 4747
  26. 3.795
  27. 0.0321
  28. 368.3
  29. 399.2
  30. 2.307
  31. 437.4
  32. 2.191
  33. 43020
  34. 286400
  35. 2881
  36. 0.03145
  37. 2765
  38. 0.4742
  39. 43.34
  40. 4.281

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