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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 298 · 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. 1.11.69 × 100 =
  2. 2.26.28 ÷ 10 =
  3. 3.136.8 × 100 =
  4. 4.34.44 ÷ 1000 =
  5. 5.13.28 × 100 =
  6. 6.21.88 × 1000 =
  7. 7.14.43 × 100 =
  8. 8.259.8 × 1000 =
  9. 9.440.7 ÷ 10 =
  10. 10.387.9 × 100 =
  11. 11.1.15 ÷ 10 =
  12. 12.19.01 × 10 =
  13. 13.16.6 ÷ 100 =
  14. 14.4.34 ÷ 1000 =
  15. 15.24.6 ÷ 100 =
  16. 16.321.6 × 10 =
  17. 17.47.55 × 1000 =
  18. 18.189.2 ÷ 100 =
  19. 19.82.3 ÷ 1000 =
  20. 20.357.3 ÷ 10 =
  21. 21.19.5 × 10 =
  22. 22.2.95 × 1000 =
  23. 23.71.9 × 10 =
  24. 24.313.4 × 100 =
  25. 25.400.6 × 100 =
  26. 26.417.8 ÷ 100 =
  27. 27.47.33 × 1000 =
  28. 28.51.1 × 1000 =
  29. 29.5.21 × 100 =
  30. 30.343.3 ÷ 10 =
  31. 31.26.79 × 100 =
  32. 32.16.63 ÷ 100 =
  33. 33.44.24 ÷ 100 =
  34. 34.308.8 ÷ 100 =
  35. 35.3.77 ÷ 100 =
  36. 36.22.48 × 10 =
  37. 37.48.34 ÷ 10 =
  38. 38.13.41 × 10 =
  39. 39.100.3 × 100 =
  40. 40.296.9 × 10 =

Answer key

  1. 1169
  2. 2.628
  3. 13680
  4. 0.03444
  5. 1328
  6. 21880
  7. 1443
  8. 259800
  9. 44.07
  10. 38790
  11. 0.115
  12. 190.1
  13. 0.166
  14. 0.00434
  15. 0.246
  16. 3216
  17. 47550
  18. 1.892
  19. 0.0823
  20. 35.73
  21. 195
  22. 2950
  23. 719
  24. 31340
  25. 40060
  26. 4.178
  27. 47330
  28. 51100
  29. 521
  30. 34.33
  31. 2679
  32. 0.1663
  33. 0.4424
  34. 3.088
  35. 0.0377
  36. 224.8
  37. 4.834
  38. 134.1
  39. 10030
  40. 2969

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