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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 845 · 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. 1.451.7 × 1000 =
  2. 2.33.3 × 1000 =
  3. 3.155.1 × 100 =
  4. 4.63.6 × 1000 =
  5. 5.425.2 × 100 =
  6. 6.15.51 ÷ 100 =
  7. 7.5.93 × 1000 =
  8. 8.52.6 × 100 =
  9. 9.166.8 × 10 =
  10. 10.309.1 ÷ 1000 =
  11. 11.37.13 × 100 =
  12. 12.292.4 × 1000 =
  13. 13.68.6 × 1000 =
  14. 14.43.1 × 1000 =
  15. 15.430.1 ÷ 100 =
  16. 16.284.1 ÷ 10 =
  17. 17.95.8 × 10 =
  18. 18.294.3 ÷ 10 =
  19. 19.20.81 ÷ 1000 =
  20. 20.293.1 × 10 =
  21. 21.201.6 ÷ 100 =
  22. 22.232.5 × 100 =
  23. 23.3.54 × 100 =
  24. 24.16.15 × 1000 =
  25. 25.97.1 × 100 =
  26. 26.101.6 ÷ 100 =
  27. 27.0.48 ÷ 1000 =
  28. 28.394.3 ÷ 1000 =
  29. 29.146.2 × 100 =
  30. 30.8.35 ÷ 10 =
  31. 31.293.5 ÷ 1000 =
  32. 32.29.36 ÷ 1000 =
  33. 33.84.1 × 10 =
  34. 34.186.2 × 10 =
  35. 35.12.41 × 10 =
  36. 36.460.1 × 100 =
  37. 37.22.6 × 10 =
  38. 38.320.1 ÷ 100 =
  39. 39.27.55 × 10 =
  40. 40.228.6 × 10 =

Answer key

  1. 451700
  2. 33300
  3. 15510
  4. 63600
  5. 42520
  6. 0.1551
  7. 5930
  8. 5260
  9. 1668
  10. 0.3091
  11. 3713
  12. 292400
  13. 68600
  14. 43100
  15. 4.301
  16. 28.41
  17. 958
  18. 29.43
  19. 0.02081
  20. 2931
  21. 2.016
  22. 23250
  23. 354
  24. 16150
  25. 9710
  26. 1.016
  27. 0.00048
  28. 0.3943
  29. 14620
  30. 0.835
  31. 0.2935
  32. 0.02936
  33. 841
  34. 1862
  35. 124.1
  36. 46010
  37. 226
  38. 3.201
  39. 275.5
  40. 2286

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