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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 954 · 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. 1.141.7 × 10 =
  2. 2.0.34 × 1000 =
  3. 3.418.4 ÷ 10 =
  4. 4.219.8 × 100 =
  5. 5.21.07 × 100 =
  6. 6.13.2 × 10 =
  7. 7.292.6 × 1000 =
  8. 8.24.19 ÷ 1000 =
  9. 9.49.15 ÷ 1000 =
  10. 10.112.1 × 100 =
  11. 11.29.38 × 100 =
  12. 12.177.9 ÷ 10 =
  13. 13.289.4 ÷ 100 =
  14. 14.10.05 × 10 =
  15. 15.17.55 × 100 =
  16. 16.42.07 × 100 =
  17. 17.283.4 ÷ 10 =
  18. 18.29.73 × 1000 =
  19. 19.10.57 × 100 =
  20. 20.81.1 × 10 =
  21. 21.238.1 ÷ 10 =
  22. 22.372.8 × 1000 =
  23. 23.210.2 × 1000 =
  24. 24.48.61 × 100 =
  25. 25.190.9 ÷ 10 =
  26. 26.37.01 × 10 =
  27. 27.28.15 ÷ 10 =
  28. 28.0.81 × 1000 =
  29. 29.44.02 ÷ 1000 =
  30. 30.29.48 ÷ 1000 =
  31. 31.9.22 × 1000 =
  32. 32.478.3 × 10 =
  33. 33.9.5 × 1000 =
  34. 34.228.1 ÷ 1000 =
  35. 35.17.74 × 100 =
  36. 36.9.13 × 10 =
  37. 37.350.1 × 1000 =
  38. 38.272.5 × 1000 =
  39. 39.3.11 ÷ 10 =
  40. 40.78.1 ÷ 1000 =

Answer key

  1. 1417
  2. 340
  3. 41.84
  4. 21980
  5. 2107
  6. 132
  7. 292600
  8. 0.02419
  9. 0.04915
  10. 11210
  11. 2938
  12. 17.79
  13. 2.894
  14. 100.5
  15. 1755
  16. 4207
  17. 28.34
  18. 29730
  19. 1057
  20. 811
  21. 23.81
  22. 372800
  23. 210200
  24. 4861
  25. 19.09
  26. 370.1
  27. 2.815
  28. 810
  29. 0.04402
  30. 0.02948
  31. 9220
  32. 4783
  33. 9500
  34. 0.2281
  35. 1774
  36. 91.3
  37. 350100
  38. 272500
  39. 0.311
  40. 0.0781

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