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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 350 · 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. 1.29.75 × 10 =
  2. 2.7.55 ÷ 1000 =
  3. 3.28.71 × 1000 =
  4. 4.117.4 ÷ 100 =
  5. 5.6.99 ÷ 10 =
  6. 6.12.79 × 100 =
  7. 7.10.28 × 10 =
  8. 8.32.46 × 10 =
  9. 9.189.7 × 1000 =
  10. 10.401.2 ÷ 100 =
  11. 11.214.8 × 10 =
  12. 12.56.7 × 100 =
  13. 13.21.97 ÷ 10 =
  14. 14.450.2 ÷ 10 =
  15. 15.17.74 × 100 =
  16. 16.23.16 ÷ 1000 =
  17. 17.6.4 × 10 =
  18. 18.14.83 × 1000 =
  19. 19.114.6 × 10 =
  20. 20.0.56 × 1000 =
  21. 21.318.1 × 100 =
  22. 22.38.07 ÷ 100 =
  23. 23.31.93 ÷ 1000 =
  24. 24.300.4 ÷ 100 =
  25. 25.4.75 × 100 =
  26. 26.19.2 × 1000 =
  27. 27.157.9 × 1000 =
  28. 28.40.93 ÷ 1000 =
  29. 29.9.81 × 10 =
  30. 30.226.8 × 10 =
  31. 31.151.3 × 10 =
  32. 32.305.1 × 100 =
  33. 33.18.84 × 10 =
  34. 34.194.6 × 1000 =
  35. 35.472.6 ÷ 1000 =
  36. 36.408.4 × 10 =
  37. 37.45.17 × 10 =
  38. 38.11.97 × 10 =
  39. 39.23.2 ÷ 1000 =
  40. 40.73.1 × 10 =

Answer key

  1. 297.5
  2. 0.00755
  3. 28710
  4. 1.174
  5. 0.699
  6. 1279
  7. 102.8
  8. 324.6
  9. 189700
  10. 4.012
  11. 2148
  12. 5670
  13. 2.197
  14. 45.02
  15. 1774
  16. 0.02316
  17. 64
  18. 14830
  19. 1146
  20. 560
  21. 31810
  22. 0.3807
  23. 0.03193
  24. 3.004
  25. 475
  26. 19200
  27. 157900
  28. 0.04093
  29. 98.1
  30. 2268
  31. 1513
  32. 30510
  33. 188.4
  34. 194600
  35. 0.4726
  36. 4084
  37. 451.7
  38. 119.7
  39. 0.0232
  40. 731

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