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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 137 · 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. 1.6.02 × 100 =
  2. 2.111.4 × 100 =
  3. 3.48.37 × 100 =
  4. 4.3.34 × 1000 =
  5. 5.398.5 × 1000 =
  6. 6.28.78 ÷ 1000 =
  7. 7.23.22 × 1000 =
  8. 8.31.69 × 10 =
  9. 9.31.05 × 1000 =
  10. 10.108.6 ÷ 1000 =
  11. 11.435.2 ÷ 100 =
  12. 12.224.7 ÷ 10 =
  13. 13.49.48 ÷ 10 =
  14. 14.179.9 ÷ 10 =
  15. 15.16.59 ÷ 1000 =
  16. 16.251.7 × 1000 =
  17. 17.37.85 × 1000 =
  18. 18.188.5 × 1000 =
  19. 19.100.6 ÷ 10 =
  20. 20.118.7 × 1000 =
  21. 21.0.63 ÷ 10 =
  22. 22.199.5 ÷ 10 =
  23. 23.6.29 ÷ 10 =
  24. 24.12.27 × 100 =
  25. 25.47.15 ÷ 100 =
  26. 26.3.11 × 100 =
  27. 27.335.2 × 100 =
  28. 28.35.27 × 10 =
  29. 29.496.7 ÷ 100 =
  30. 30.19.31 ÷ 1000 =
  31. 31.189.1 ÷ 100 =
  32. 32.96.2 × 10 =
  33. 33.231.8 ÷ 1000 =
  34. 34.0.74 ÷ 1000 =
  35. 35.24.1 ÷ 100 =
  36. 36.115.1 × 1000 =
  37. 37.66.8 × 10 =
  38. 38.262.1 × 100 =
  39. 39.417.5 ÷ 1000 =
  40. 40.28.77 × 100 =

Answer key

  1. 602
  2. 11140
  3. 4837
  4. 3340
  5. 398500
  6. 0.02878
  7. 23220
  8. 316.9
  9. 31050
  10. 0.1086
  11. 4.352
  12. 22.47
  13. 4.948
  14. 17.99
  15. 0.01659
  16. 251700
  17. 37850
  18. 188500
  19. 10.06
  20. 118700
  21. 0.063
  22. 19.95
  23. 0.629
  24. 1227
  25. 0.4715
  26. 311
  27. 33520
  28. 352.7
  29. 4.967
  30. 0.01931
  31. 1.891
  32. 962
  33. 0.2318
  34. 0.00074
  35. 0.241
  36. 115100
  37. 668
  38. 26210
  39. 0.4175
  40. 2877

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