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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 130 · 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. 1.426.5 ÷ 10 =
  2. 2.441.1 × 100 =
  3. 3.23.72 × 1000 =
  4. 4.464.6 ÷ 10 =
  5. 5.20.01 ÷ 10 =
  6. 6.41.74 ÷ 10 =
  7. 7.38.57 ÷ 1000 =
  8. 8.253.6 × 100 =
  9. 9.246.8 × 10 =
  10. 10.18.21 ÷ 10 =
  11. 11.1.87 × 100 =
  12. 12.175.5 × 100 =
  13. 13.227.3 ÷ 10 =
  14. 14.2.87 × 10 =
  15. 15.24.78 × 1000 =
  16. 16.16.73 ÷ 100 =
  17. 17.42.3 × 1000 =
  18. 18.186.1 × 10 =
  19. 19.43.57 ÷ 10 =
  20. 20.13.54 ÷ 10 =
  21. 21.30.51 ÷ 1000 =
  22. 22.36.51 × 10 =
  23. 23.29.69 × 1000 =
  24. 24.85.6 × 10 =
  25. 25.38.4 × 100 =
  26. 26.5.51 × 10 =
  27. 27.92.2 × 100 =
  28. 28.77.7 × 10 =
  29. 29.253.5 × 1000 =
  30. 30.20.31 ÷ 1000 =
  31. 31.34.36 × 10 =
  32. 32.31.03 × 100 =
  33. 33.1.03 × 10 =
  34. 34.34.11 × 100 =
  35. 35.23.07 × 1000 =
  36. 36.3.4 × 1000 =
  37. 37.166.7 ÷ 10 =
  38. 38.36.32 × 1000 =
  39. 39.305.4 × 1000 =
  40. 40.9.28 × 10 =

Answer key

  1. 42.65
  2. 44110
  3. 23720
  4. 46.46
  5. 2.001
  6. 4.174
  7. 0.03857
  8. 25360
  9. 2468
  10. 1.821
  11. 187
  12. 17550
  13. 22.73
  14. 28.7
  15. 24780
  16. 0.1673
  17. 42300
  18. 1861
  19. 4.357
  20. 1.354
  21. 0.03051
  22. 365.1
  23. 29690
  24. 856
  25. 3840
  26. 55.1
  27. 9220
  28. 777
  29. 253500
  30. 0.02031
  31. 343.6
  32. 3103
  33. 10.3
  34. 3411
  35. 23070
  36. 3400
  37. 16.67
  38. 36320
  39. 305400
  40. 92.8

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