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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 308 · 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. 1.25.48 × 10 =
  2. 2.9.84 × 10 =
  3. 3.28.1 × 10 =
  4. 4.110.7 × 10 =
  5. 5.49.83 ÷ 10 =
  6. 6.13.35 × 1000 =
  7. 7.166.8 × 10 =
  8. 8.462.8 × 1000 =
  9. 9.96.8 × 1000 =
  10. 10.22.88 ÷ 1000 =
  11. 11.25.02 ÷ 100 =
  12. 12.43.31 × 10 =
  13. 13.41.61 × 10 =
  14. 14.380.8 ÷ 10 =
  15. 15.20.85 ÷ 1000 =
  16. 16.441.1 × 100 =
  17. 17.44.83 × 10 =
  18. 18.186.8 × 100 =
  19. 19.150.2 ÷ 10 =
  20. 20.12.09 ÷ 100 =
  21. 21.31.01 ÷ 10 =
  22. 22.306.7 ÷ 10 =
  23. 23.15.64 ÷ 10 =
  24. 24.23.7 × 10 =
  25. 25.29.56 × 1000 =
  26. 26.45.99 ÷ 10 =
  27. 27.47.44 × 1000 =
  28. 28.140.4 ÷ 10 =
  29. 29.5.68 ÷ 100 =
  30. 30.110.8 × 1000 =
  31. 31.430.4 ÷ 100 =
  32. 32.9.24 ÷ 1000 =
  33. 33.26.58 ÷ 1000 =
  34. 34.19.78 ÷ 1000 =
  35. 35.446.3 × 100 =
  36. 36.402.4 ÷ 100 =
  37. 37.4.79 ÷ 10 =
  38. 38.330.7 ÷ 10 =
  39. 39.142.2 × 10 =
  40. 40.17.91 ÷ 100 =

Answer key

  1. 254.8
  2. 98.4
  3. 281
  4. 1107
  5. 4.983
  6. 13350
  7. 1668
  8. 462800
  9. 96800
  10. 0.02288
  11. 0.2502
  12. 433.1
  13. 416.1
  14. 38.08
  15. 0.02085
  16. 44110
  17. 448.3
  18. 18680
  19. 15.02
  20. 0.1209
  21. 3.101
  22. 30.67
  23. 1.564
  24. 237
  25. 29560
  26. 4.599
  27. 47440
  28. 14.04
  29. 0.0568
  30. 110800
  31. 4.304
  32. 0.00924
  33. 0.02658
  34. 0.01978
  35. 44630
  36. 4.024
  37. 0.479
  38. 33.07
  39. 1422
  40. 0.1791

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