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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 935 · 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. 1.435.6 × 10 =
  2. 2.308.1 × 1000 =
  3. 3.31.39 × 100 =
  4. 4.83.7 ÷ 100 =
  5. 5.459.6 ÷ 10 =
  6. 6.42.06 ÷ 100 =
  7. 7.292.6 ÷ 1000 =
  8. 8.215.7 ÷ 1000 =
  9. 9.463.6 × 100 =
  10. 10.17.86 × 1000 =
  11. 11.8.8 × 100 =
  12. 12.4.45 × 100 =
  13. 13.39.62 × 10 =
  14. 14.8.37 × 10 =
  15. 15.18.33 × 100 =
  16. 16.11.44 × 100 =
  17. 17.23.34 × 100 =
  18. 18.154.5 × 10 =
  19. 19.65.2 ÷ 10 =
  20. 20.42.53 ÷ 100 =
  21. 21.452.6 × 10 =
  22. 22.26.3 × 10 =
  23. 23.1.34 × 1000 =
  24. 24.494.4 × 100 =
  25. 25.97.3 ÷ 100 =
  26. 26.19.2 × 1000 =
  27. 27.24.09 ÷ 1000 =
  28. 28.44.91 × 10 =
  29. 29.21.85 × 1000 =
  30. 30.90.1 × 100 =
  31. 31.215.7 ÷ 100 =
  32. 32.13.71 ÷ 10 =
  33. 33.31.44 ÷ 10 =
  34. 34.46.59 ÷ 1000 =
  35. 35.36.13 ÷ 10 =
  36. 36.184.1 × 1000 =
  37. 37.491.8 × 10 =
  38. 38.25.63 ÷ 1000 =
  39. 39.479.4 × 100 =
  40. 40.1.89 × 100 =

Answer key

  1. 4356
  2. 308100
  3. 3139
  4. 0.837
  5. 45.96
  6. 0.4206
  7. 0.2926
  8. 0.2157
  9. 46360
  10. 17860
  11. 880
  12. 445
  13. 396.2
  14. 83.7
  15. 1833
  16. 1144
  17. 2334
  18. 1545
  19. 6.52
  20. 0.4253
  21. 4526
  22. 263
  23. 1340
  24. 49440
  25. 0.973
  26. 19200
  27. 0.02409
  28. 449.1
  29. 21850
  30. 9010
  31. 2.157
  32. 1.371
  33. 3.144
  34. 0.04659
  35. 3.613
  36. 184100
  37. 4918
  38. 0.02563
  39. 47940
  40. 189

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