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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 765 · 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. 1.133.4 × 1000 =
  2. 2.145.4 ÷ 100 =
  3. 3.332.7 × 10 =
  4. 4.42.48 × 1000 =
  5. 5.39.27 ÷ 10 =
  6. 6.384.4 ÷ 10 =
  7. 7.3.71 ÷ 1000 =
  8. 8.5.06 × 10 =
  9. 9.438.3 ÷ 100 =
  10. 10.113.3 ÷ 1000 =
  11. 11.61.4 ÷ 100 =
  12. 12.38.61 ÷ 10 =
  13. 13.131.1 ÷ 100 =
  14. 14.364.1 ÷ 100 =
  15. 15.30.29 × 100 =
  16. 16.15.97 ÷ 1000 =
  17. 17.14.37 ÷ 100 =
  18. 18.106.9 × 1000 =
  19. 19.48.28 ÷ 1000 =
  20. 20.429.8 × 100 =
  21. 21.206.2 ÷ 10 =
  22. 22.269.2 × 10 =
  23. 23.3.23 × 100 =
  24. 24.3.75 ÷ 1000 =
  25. 25.469.9 × 1000 =
  26. 26.3.96 × 10 =
  27. 27.2.5 × 100 =
  28. 28.17.18 × 1000 =
  29. 29.15.89 ÷ 10 =
  30. 30.4.95 × 10 =
  31. 31.31.1 × 100 =
  32. 32.7.2 × 10 =
  33. 33.139.8 × 100 =
  34. 34.433.5 × 100 =
  35. 35.2.01 ÷ 100 =
  36. 36.313.4 × 1000 =
  37. 37.6.59 ÷ 1000 =
  38. 38.15.92 × 1000 =
  39. 39.125.8 × 10 =
  40. 40.31.24 × 10 =

Answer key

  1. 133400
  2. 1.454
  3. 3327
  4. 42480
  5. 3.927
  6. 38.44
  7. 0.00371
  8. 50.6
  9. 4.383
  10. 0.1133
  11. 0.614
  12. 3.861
  13. 1.311
  14. 3.641
  15. 3029
  16. 0.01597
  17. 0.1437
  18. 106900
  19. 0.04828
  20. 42980
  21. 20.62
  22. 2692
  23. 323
  24. 0.00375
  25. 469900
  26. 39.6
  27. 250
  28. 17180
  29. 1.589
  30. 49.5
  31. 3110
  32. 72
  33. 13980
  34. 43350
  35. 0.0201
  36. 313400
  37. 0.00659
  38. 15920
  39. 1258
  40. 312.4

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