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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 42 · 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. 1.57.8 ÷ 10 =
  2. 2.10.68 × 1000 =
  3. 3.340.5 × 10 =
  4. 4.447.7 × 1000 =
  5. 5.22.07 ÷ 10 =
  6. 6.417.7 × 10 =
  7. 7.25.2 × 10 =
  8. 8.490.4 × 10 =
  9. 9.278.9 × 1000 =
  10. 10.294.3 × 1000 =
  11. 11.482.9 ÷ 1000 =
  12. 12.15.35 × 1000 =
  13. 13.20.54 ÷ 10 =
  14. 14.231.1 ÷ 100 =
  15. 15.30.1 ÷ 10 =
  16. 16.28.43 × 100 =
  17. 17.10.11 ÷ 10 =
  18. 18.14.01 × 100 =
  19. 19.170.2 × 1000 =
  20. 20.20.88 ÷ 1000 =
  21. 21.30.41 × 1000 =
  22. 22.27.66 × 1000 =
  23. 23.137.5 × 10 =
  24. 24.1.23 ÷ 1000 =
  25. 25.129.2 × 100 =
  26. 26.42.88 ÷ 1000 =
  27. 27.355.1 × 1000 =
  28. 28.31.81 × 10 =
  29. 29.30.51 ÷ 100 =
  30. 30.472.8 × 10 =
  31. 31.1.24 × 100 =
  32. 32.48.23 ÷ 10 =
  33. 33.272.4 × 10 =
  34. 34.142.9 × 1000 =
  35. 35.38.87 ÷ 100 =
  36. 36.24.67 × 1000 =
  37. 37.424.4 ÷ 1000 =
  38. 38.11.52 × 1000 =
  39. 39.13.51 × 10 =
  40. 40.2.2 ÷ 100 =

Answer key

  1. 5.78
  2. 10680
  3. 3405
  4. 447700
  5. 2.207
  6. 4177
  7. 252
  8. 4904
  9. 278900
  10. 294300
  11. 0.4829
  12. 15350
  13. 2.054
  14. 2.311
  15. 3.01
  16. 2843
  17. 1.011
  18. 1401
  19. 170200
  20. 0.02088
  21. 30410
  22. 27660
  23. 1375
  24. 0.00123
  25. 12920
  26. 0.04288
  27. 355100
  28. 318.1
  29. 0.3051
  30. 4728
  31. 124
  32. 4.823
  33. 2724
  34. 142900
  35. 0.3887
  36. 24670
  37. 0.4244
  38. 11520
  39. 135.1
  40. 0.022

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