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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 777 · 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. 1.468.1 × 10 =
  2. 2.27.75 ÷ 100 =
  3. 3.273.9 ÷ 100 =
  4. 4.459.6 ÷ 10 =
  5. 5.98.1 × 10 =
  6. 6.253.3 × 10 =
  7. 7.14.19 × 10 =
  8. 8.457.2 ÷ 100 =
  9. 9.100.8 × 1000 =
  10. 10.114.8 ÷ 1000 =
  11. 11.69.5 × 10 =
  12. 12.12.55 ÷ 100 =
  13. 13.488.7 × 1000 =
  14. 14.14.42 × 10 =
  15. 15.26.07 × 1000 =
  16. 16.44.26 × 10 =
  17. 17.409.3 × 10 =
  18. 18.424.6 × 10 =
  19. 19.133.7 × 10 =
  20. 20.38.71 × 10 =
  21. 21.368.2 ÷ 10 =
  22. 22.21.37 × 1000 =
  23. 23.79.8 ÷ 10 =
  24. 24.10.25 ÷ 10 =
  25. 25.9.66 × 100 =
  26. 26.134.6 × 10 =
  27. 27.430.3 × 100 =
  28. 28.37.3 ÷ 10 =
  29. 29.333.5 × 100 =
  30. 30.41.91 ÷ 1000 =
  31. 31.95.1 × 100 =
  32. 32.40.92 × 10 =
  33. 33.339.1 × 1000 =
  34. 34.144.7 × 1000 =
  35. 35.44.86 × 10 =
  36. 36.49.29 × 10 =
  37. 37.20.45 ÷ 10 =
  38. 38.39.41 × 10 =
  39. 39.456.8 ÷ 10 =
  40. 40.37.61 × 100 =

Answer key

  1. 4681
  2. 0.2775
  3. 2.739
  4. 45.96
  5. 981
  6. 2533
  7. 141.9
  8. 4.572
  9. 100800
  10. 0.1148
  11. 695
  12. 0.1255
  13. 488700
  14. 144.2
  15. 26070
  16. 442.6
  17. 4093
  18. 4246
  19. 1337
  20. 387.1
  21. 36.82
  22. 21370
  23. 7.98
  24. 1.025
  25. 966
  26. 1346
  27. 43030
  28. 3.73
  29. 33350
  30. 0.04191
  31. 9510
  32. 409.2
  33. 339100
  34. 144700
  35. 448.6
  36. 492.9
  37. 2.045
  38. 394.1
  39. 45.68
  40. 3761

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