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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 226 · 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. 1.474.3 ÷ 100 =
  2. 2.383.2 × 100 =
  3. 3.402.1 × 100 =
  4. 4.409.4 ÷ 10 =
  5. 5.13.47 ÷ 1000 =
  6. 6.492.1 ÷ 1000 =
  7. 7.2.92 × 10 =
  8. 8.309.4 ÷ 1000 =
  9. 9.20.88 ÷ 1000 =
  10. 10.11.7 × 10 =
  11. 11.41.61 × 100 =
  12. 12.246.5 × 1000 =
  13. 13.66.2 × 100 =
  14. 14.25.09 ÷ 10 =
  15. 15.393.8 ÷ 100 =
  16. 16.18.1 ÷ 1000 =
  17. 17.367.9 ÷ 100 =
  18. 18.13.49 ÷ 1000 =
  19. 19.28.29 × 1000 =
  20. 20.65.8 × 100 =
  21. 21.233.3 × 100 =
  22. 22.166.3 ÷ 10 =
  23. 23.1.81 × 1000 =
  24. 24.45.37 × 10 =
  25. 25.9.15 ÷ 10 =
  26. 26.487.6 × 100 =
  27. 27.10.56 ÷ 10 =
  28. 28.6.31 × 1000 =
  29. 29.442.8 ÷ 1000 =
  30. 30.420.1 ÷ 10 =
  31. 31.81.4 × 1000 =
  32. 32.37.1 ÷ 100 =
  33. 33.81.9 × 1000 =
  34. 34.31.34 ÷ 10 =
  35. 35.444.2 ÷ 10 =
  36. 36.9.81 ÷ 1000 =
  37. 37.132.1 ÷ 10 =
  38. 38.307.7 × 1000 =
  39. 39.499.9 × 100 =
  40. 40.44.11 × 1000 =

Answer key

  1. 4.743
  2. 38320
  3. 40210
  4. 40.94
  5. 0.01347
  6. 0.4921
  7. 29.2
  8. 0.3094
  9. 0.02088
  10. 117
  11. 4161
  12. 246500
  13. 6620
  14. 2.509
  15. 3.938
  16. 0.0181
  17. 3.679
  18. 0.01349
  19. 28290
  20. 6580
  21. 23330
  22. 16.63
  23. 1810
  24. 453.7
  25. 0.915
  26. 48760
  27. 1.056
  28. 6310
  29. 0.4428
  30. 42.01
  31. 81400
  32. 0.371
  33. 81900
  34. 3.134
  35. 44.42
  36. 0.00981
  37. 13.21
  38. 307700
  39. 49990
  40. 44110

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