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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 146 · 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. 1.485.5 × 100 =
  2. 2.8.31 × 1000 =
  3. 3.0.84 ÷ 10 =
  4. 4.11.44 ÷ 100 =
  5. 5.104.9 ÷ 100 =
  6. 6.402.4 ÷ 10 =
  7. 7.31.17 ÷ 100 =
  8. 8.288.8 × 100 =
  9. 9.46.95 ÷ 1000 =
  10. 10.24.92 ÷ 10 =
  11. 11.39.91 ÷ 10 =
  12. 12.59.4 ÷ 1000 =
  13. 13.260.2 ÷ 100 =
  14. 14.405.8 × 10 =
  15. 15.438.6 × 1000 =
  16. 16.111.1 × 100 =
  17. 17.18.99 × 100 =
  18. 18.37.01 × 1000 =
  19. 19.6.51 × 10 =
  20. 20.12.69 ÷ 1000 =
  21. 21.377.1 × 1000 =
  22. 22.20.11 × 10 =
  23. 23.203.2 × 10 =
  24. 24.18.1 × 1000 =
  25. 25.293.4 × 100 =
  26. 26.178.1 × 100 =
  27. 27.5.37 ÷ 1000 =
  28. 28.22.3 ÷ 1000 =
  29. 29.21.93 × 10 =
  30. 30.319.8 ÷ 1000 =
  31. 31.10.17 × 10 =
  32. 32.21.59 ÷ 100 =
  33. 33.308.5 × 10 =
  34. 34.24.42 × 1000 =
  35. 35.2.51 ÷ 10 =
  36. 36.36.5 × 100 =
  37. 37.29.45 ÷ 10 =
  38. 38.12.98 ÷ 1000 =
  39. 39.40.61 × 100 =
  40. 40.297.1 × 100 =

Answer key

  1. 48550
  2. 8310
  3. 0.084
  4. 0.1144
  5. 1.049
  6. 40.24
  7. 0.3117
  8. 28880
  9. 0.04695
  10. 2.492
  11. 3.991
  12. 0.0594
  13. 2.602
  14. 4058
  15. 438600
  16. 11110
  17. 1899
  18. 37010
  19. 65.1
  20. 0.01269
  21. 377100
  22. 201.1
  23. 2032
  24. 18100
  25. 29340
  26. 17810
  27. 0.00537
  28. 0.0223
  29. 219.3
  30. 0.3198
  31. 101.7
  32. 0.2159
  33. 3085
  34. 24420
  35. 0.251
  36. 3650
  37. 2.945
  38. 0.01298
  39. 4061
  40. 29710

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