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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 512 · 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. 1.27.93 ÷ 10 =
  2. 2.164.5 ÷ 10 =
  3. 3.450.5 × 1000 =
  4. 4.23.51 ÷ 1000 =
  5. 5.12.21 ÷ 100 =
  6. 6.44.27 ÷ 10 =
  7. 7.11.29 × 10 =
  8. 8.348.3 × 100 =
  9. 9.41.42 ÷ 100 =
  10. 10.419.1 × 10 =
  11. 11.178.5 ÷ 1000 =
  12. 12.12.72 ÷ 10 =
  13. 13.31.31 × 1000 =
  14. 14.3.24 ÷ 100 =
  15. 15.32.44 ÷ 10 =
  16. 16.132.2 ÷ 10 =
  17. 17.125.4 × 10 =
  18. 18.37.27 × 1000 =
  19. 19.37.02 × 100 =
  20. 20.17.55 ÷ 100 =
  21. 21.184.9 ÷ 100 =
  22. 22.186.2 ÷ 10 =
  23. 23.418.4 ÷ 10 =
  24. 24.359.4 × 10 =
  25. 25.4.98 × 10 =
  26. 26.171.4 × 10 =
  27. 27.117.1 × 10 =
  28. 28.18.22 ÷ 100 =
  29. 29.35.04 ÷ 10 =
  30. 30.73.8 ÷ 10 =
  31. 31.356.5 ÷ 10 =
  32. 32.49.11 ÷ 1000 =
  33. 33.3.62 × 10 =
  34. 34.265.7 × 1000 =
  35. 35.368.1 × 1000 =
  36. 36.128.6 ÷ 1000 =
  37. 37.183.4 ÷ 10 =
  38. 38.38.78 × 10 =
  39. 39.28.98 × 1000 =
  40. 40.15.8 × 10 =

Answer key

  1. 2.793
  2. 16.45
  3. 450500
  4. 0.02351
  5. 0.1221
  6. 4.427
  7. 112.9
  8. 34830
  9. 0.4142
  10. 4191
  11. 0.1785
  12. 1.272
  13. 31310
  14. 0.0324
  15. 3.244
  16. 13.22
  17. 1254
  18. 37270
  19. 3702
  20. 0.1755
  21. 1.849
  22. 18.62
  23. 41.84
  24. 3594
  25. 49.8
  26. 1714
  27. 1171
  28. 0.1822
  29. 3.504
  30. 7.38
  31. 35.65
  32. 0.04911
  33. 36.2
  34. 265700
  35. 368100
  36. 0.1286
  37. 18.34
  38. 387.8
  39. 28980
  40. 158

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