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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 393 · 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. 1.21.06 × 100 =
  2. 2.85.2 × 10 =
  3. 3.92.3 ÷ 1000 =
  4. 4.420.9 ÷ 100 =
  5. 5.317.5 × 10 =
  6. 6.453.5 × 100 =
  7. 7.32.89 × 10 =
  8. 8.34.3 ÷ 10 =
  9. 9.9.51 ÷ 1000 =
  10. 10.418.3 × 10 =
  11. 11.39.61 ÷ 100 =
  12. 12.3.1 ÷ 100 =
  13. 13.388.1 ÷ 10 =
  14. 14.27.97 × 10 =
  15. 15.84.4 × 10 =
  16. 16.217.4 ÷ 10 =
  17. 17.137.7 ÷ 10 =
  18. 18.40.12 × 100 =
  19. 19.23.59 ÷ 100 =
  20. 20.219.9 ÷ 1000 =
  21. 21.289.2 ÷ 100 =
  22. 22.1.94 × 10 =
  23. 23.438.4 ÷ 1000 =
  24. 24.3.31 ÷ 1000 =
  25. 25.33.96 × 100 =
  26. 26.142.2 ÷ 100 =
  27. 27.403.8 ÷ 100 =
  28. 28.17.51 × 10 =
  29. 29.46.21 ÷ 1000 =
  30. 30.233.2 ÷ 10 =
  31. 31.289.1 × 1000 =
  32. 32.249.6 × 1000 =
  33. 33.330.7 ÷ 100 =
  34. 34.12.49 ÷ 10 =
  35. 35.11.4 × 1000 =
  36. 36.363.5 × 100 =
  37. 37.49.64 × 100 =
  38. 38.325.7 ÷ 10 =
  39. 39.10.12 × 1000 =
  40. 40.27.39 × 10 =

Answer key

  1. 2106
  2. 852
  3. 0.0923
  4. 4.209
  5. 3175
  6. 45350
  7. 328.9
  8. 3.43
  9. 0.00951
  10. 4183
  11. 0.3961
  12. 0.031
  13. 38.81
  14. 279.7
  15. 844
  16. 21.74
  17. 13.77
  18. 4012
  19. 0.2359
  20. 0.2199
  21. 2.892
  22. 19.4
  23. 0.4384
  24. 0.00331
  25. 3396
  26. 1.422
  27. 4.038
  28. 175.1
  29. 0.04621
  30. 23.32
  31. 289100
  32. 249600
  33. 3.307
  34. 1.249
  35. 11400
  36. 36350
  37. 4964
  38. 32.57
  39. 10120
  40. 273.9

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