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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 623 · 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. 1.42.49 × 10 =
  2. 2.460.5 ÷ 100 =
  3. 3.17.01 × 100 =
  4. 4.4.95 × 1000 =
  5. 5.21.02 × 1000 =
  6. 6.112.2 × 100 =
  7. 7.211.1 ÷ 1000 =
  8. 8.7.14 ÷ 100 =
  9. 9.22.32 ÷ 10 =
  10. 10.13.25 × 10 =
  11. 11.4.88 × 10 =
  12. 12.10.93 × 10 =
  13. 13.44.82 × 10 =
  14. 14.266.9 × 100 =
  15. 15.28.09 ÷ 1000 =
  16. 16.40.1 × 1000 =
  17. 17.201.8 × 10 =
  18. 18.42.09 ÷ 100 =
  19. 19.298.6 ÷ 1000 =
  20. 20.487.9 × 100 =
  21. 21.40.36 ÷ 1000 =
  22. 22.485.2 ÷ 1000 =
  23. 23.268.5 ÷ 100 =
  24. 24.488.8 × 10 =
  25. 25.311.3 ÷ 1000 =
  26. 26.173.7 × 1000 =
  27. 27.129.5 ÷ 10 =
  28. 28.17.42 ÷ 10 =
  29. 29.8.07 ÷ 10 =
  30. 30.369.9 × 100 =
  31. 31.49.23 ÷ 100 =
  32. 32.88.6 × 1000 =
  33. 33.238.2 × 10 =
  34. 34.350.8 ÷ 1000 =
  35. 35.369.7 × 100 =
  36. 36.3.2 ÷ 1000 =
  37. 37.20.14 × 100 =
  38. 38.485.1 × 100 =
  39. 39.164.2 ÷ 100 =
  40. 40.7.14 ÷ 100 =

Answer key

  1. 424.9
  2. 4.605
  3. 1701
  4. 4950
  5. 21020
  6. 11220
  7. 0.2111
  8. 0.0714
  9. 2.232
  10. 132.5
  11. 48.8
  12. 109.3
  13. 448.2
  14. 26690
  15. 0.02809
  16. 40100
  17. 2018
  18. 0.4209
  19. 0.2986
  20. 48790
  21. 0.04036
  22. 0.4852
  23. 2.685
  24. 4888
  25. 0.3113
  26. 173700
  27. 12.95
  28. 1.742
  29. 0.807
  30. 36990
  31. 0.4923
  32. 88600
  33. 2382
  34. 0.3508
  35. 36970
  36. 0.0032
  37. 2014
  38. 48510
  39. 1.642
  40. 0.0714

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