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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 497 · 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. 1.236.9 × 10 =
  2. 2.470.7 × 10 =
  3. 3.451.1 × 10 =
  4. 4.449.6 ÷ 100 =
  5. 5.112.1 ÷ 10 =
  6. 6.196.2 ÷ 10 =
  7. 7.355.5 × 10 =
  8. 8.407.4 ÷ 1000 =
  9. 9.41.09 ÷ 1000 =
  10. 10.225.3 × 1000 =
  11. 11.1.81 × 1000 =
  12. 12.74.6 ÷ 10 =
  13. 13.119.1 ÷ 10 =
  14. 14.351.5 ÷ 100 =
  15. 15.384.8 × 1000 =
  16. 16.22.27 ÷ 10 =
  17. 17.24.35 × 10 =
  18. 18.106.9 × 10 =
  19. 19.22.39 × 10 =
  20. 20.18.04 × 1000 =
  21. 21.85.6 × 100 =
  22. 22.10.17 × 10 =
  23. 23.4.34 ÷ 10 =
  24. 24.256.1 × 10 =
  25. 25.16.02 ÷ 100 =
  26. 26.3.03 × 10 =
  27. 27.370.5 × 10 =
  28. 28.93.6 × 10 =
  29. 29.30.74 ÷ 100 =
  30. 30.39.45 × 10 =
  31. 31.439.6 ÷ 10 =
  32. 32.44.21 ÷ 1000 =
  33. 33.0.13 × 10 =
  34. 34.9.61 × 100 =
  35. 35.491.2 × 10 =
  36. 36.12.61 ÷ 100 =
  37. 37.204.7 × 100 =
  38. 38.26.21 ÷ 1000 =
  39. 39.32.7 ÷ 1000 =
  40. 40.123.3 ÷ 1000 =

Answer key

  1. 2369
  2. 4707
  3. 4511
  4. 4.496
  5. 11.21
  6. 19.62
  7. 3555
  8. 0.4074
  9. 0.04109
  10. 225300
  11. 1810
  12. 7.46
  13. 11.91
  14. 3.515
  15. 384800
  16. 2.227
  17. 243.5
  18. 1069
  19. 223.9
  20. 18040
  21. 8560
  22. 101.7
  23. 0.434
  24. 2561
  25. 0.1602
  26. 30.3
  27. 3705
  28. 936
  29. 0.3074
  30. 394.5
  31. 43.96
  32. 0.04421
  33. 1.3
  34. 961
  35. 4912
  36. 0.1261
  37. 20470
  38. 0.02621
  39. 0.0327
  40. 0.1233

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