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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 324 · 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. 1.256.8 × 10 =
  2. 2.32.48 ÷ 1000 =
  3. 3.19.03 ÷ 1000 =
  4. 4.104.7 × 10 =
  5. 5.28.92 × 10 =
  6. 6.313.6 ÷ 10 =
  7. 7.6.26 × 10 =
  8. 8.38.74 × 10 =
  9. 9.392.2 ÷ 10 =
  10. 10.393.1 × 100 =
  11. 11.43.04 × 10 =
  12. 12.49.99 × 100 =
  13. 13.35.67 × 10 =
  14. 14.49.37 × 1000 =
  15. 15.1.88 ÷ 10 =
  16. 16.166.6 ÷ 1000 =
  17. 17.15.97 × 1000 =
  18. 18.37.67 × 100 =
  19. 19.476.9 × 1000 =
  20. 20.141.8 × 100 =
  21. 21.119.8 ÷ 100 =
  22. 22.366.1 ÷ 100 =
  23. 23.234.6 × 10 =
  24. 24.28.25 × 100 =
  25. 25.82.6 ÷ 100 =
  26. 26.167.5 ÷ 100 =
  27. 27.0.21 × 100 =
  28. 28.256.7 × 10 =
  29. 29.379.2 × 10 =
  30. 30.18.16 × 1000 =
  31. 31.205.1 × 1000 =
  32. 32.46.1 ÷ 100 =
  33. 33.7.9 ÷ 10 =
  34. 34.424.4 × 100 =
  35. 35.11.86 ÷ 100 =
  36. 36.155.7 × 10 =
  37. 37.301.5 × 100 =
  38. 38.101.4 × 100 =
  39. 39.14.52 ÷ 1000 =
  40. 40.35.83 ÷ 100 =

Answer key

  1. 2568
  2. 0.03248
  3. 0.01903
  4. 1047
  5. 289.2
  6. 31.36
  7. 62.6
  8. 387.4
  9. 39.22
  10. 39310
  11. 430.4
  12. 4999
  13. 356.7
  14. 49370
  15. 0.188
  16. 0.1666
  17. 15970
  18. 3767
  19. 476900
  20. 14180
  21. 1.198
  22. 3.661
  23. 2346
  24. 2825
  25. 0.826
  26. 1.675
  27. 21
  28. 2567
  29. 3792
  30. 18160
  31. 205100
  32. 0.461
  33. 0.79
  34. 42440
  35. 0.1186
  36. 1557
  37. 30150
  38. 10140
  39. 0.01452
  40. 0.3583

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