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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 394 · 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. 1.20.93 × 100 =
  2. 2.29.77 ÷ 10 =
  3. 3.358.2 ÷ 10 =
  4. 4.372.9 ÷ 1000 =
  5. 5.11.69 × 100 =
  6. 6.50.6 × 10 =
  7. 7.7.76 × 10 =
  8. 8.353.7 × 1000 =
  9. 9.193.3 × 100 =
  10. 10.29.67 ÷ 1000 =
  11. 11.10.1 ÷ 1000 =
  12. 12.368.8 × 100 =
  13. 13.87.5 × 100 =
  14. 14.94.4 × 10 =
  15. 15.223.8 × 100 =
  16. 16.10.24 ÷ 10 =
  17. 17.35.9 ÷ 1000 =
  18. 18.38.93 ÷ 10 =
  19. 19.22.03 × 10 =
  20. 20.325.1 ÷ 1000 =
  21. 21.16.24 × 10 =
  22. 22.78.7 ÷ 10 =
  23. 23.68.9 × 10 =
  24. 24.22.36 ÷ 100 =
  25. 25.41.39 ÷ 10 =
  26. 26.32.32 ÷ 10 =
  27. 27.261.7 ÷ 100 =
  28. 28.4.14 × 1000 =
  29. 29.276.9 × 1000 =
  30. 30.16.14 ÷ 1000 =
  31. 31.464.4 × 10 =
  32. 32.25.17 ÷ 100 =
  33. 33.19.21 ÷ 100 =
  34. 34.42.73 × 10 =
  35. 35.42.11 × 1000 =
  36. 36.46.4 × 10 =
  37. 37.444.1 × 10 =
  38. 38.208.3 × 1000 =
  39. 39.310.4 ÷ 1000 =
  40. 40.337.1 ÷ 1000 =

Answer key

  1. 2093
  2. 2.977
  3. 35.82
  4. 0.3729
  5. 1169
  6. 506
  7. 77.6
  8. 353700
  9. 19330
  10. 0.02967
  11. 0.0101
  12. 36880
  13. 8750
  14. 944
  15. 22380
  16. 1.024
  17. 0.0359
  18. 3.893
  19. 220.3
  20. 0.3251
  21. 162.4
  22. 7.87
  23. 689
  24. 0.2236
  25. 4.139
  26. 3.232
  27. 2.617
  28. 4140
  29. 276900
  30. 0.01614
  31. 4644
  32. 0.2517
  33. 0.1921
  34. 427.3
  35. 42110
  36. 464
  37. 4441
  38. 208300
  39. 0.3104
  40. 0.3371

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