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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 186 · 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. 1.48.38 ÷ 100 =
  2. 2.13.2 × 100 =
  3. 3.14.86 ÷ 1000 =
  4. 4.104.1 ÷ 10 =
  5. 5.48.23 ÷ 1000 =
  6. 6.27.16 ÷ 100 =
  7. 7.0.21 ÷ 100 =
  8. 8.31.45 ÷ 100 =
  9. 9.10.3 ÷ 100 =
  10. 10.10.4 × 10 =
  11. 11.8.51 × 100 =
  12. 12.390.4 × 1000 =
  13. 13.5.57 × 10 =
  14. 14.255.6 ÷ 10 =
  15. 15.329.8 ÷ 10 =
  16. 16.10.3 ÷ 10 =
  17. 17.131.8 ÷ 10 =
  18. 18.235.6 × 1000 =
  19. 19.193.4 ÷ 10 =
  20. 20.409.8 ÷ 10 =
  21. 21.318.9 ÷ 10 =
  22. 22.219.7 × 10 =
  23. 23.135.9 ÷ 10 =
  24. 24.23.63 × 1000 =
  25. 25.424.9 × 1000 =
  26. 26.41.3 × 100 =
  27. 27.263.2 ÷ 100 =
  28. 28.1.01 ÷ 100 =
  29. 29.480.9 × 100 =
  30. 30.269.8 × 1000 =
  31. 31.6.84 × 1000 =
  32. 32.14.65 × 100 =
  33. 33.383.9 × 100 =
  34. 34.23.86 × 10 =
  35. 35.42.15 ÷ 100 =
  36. 36.21.41 ÷ 10 =
  37. 37.56.6 × 100 =
  38. 38.37.4 × 10 =
  39. 39.465.2 ÷ 10 =
  40. 40.303.1 × 10 =

Answer key

  1. 0.4838
  2. 1320
  3. 0.01486
  4. 10.41
  5. 0.04823
  6. 0.2716
  7. 0.0021
  8. 0.3145
  9. 0.103
  10. 104
  11. 851
  12. 390400
  13. 55.7
  14. 25.56
  15. 32.98
  16. 1.03
  17. 13.18
  18. 235600
  19. 19.34
  20. 40.98
  21. 31.89
  22. 2197
  23. 13.59
  24. 23630
  25. 424900
  26. 4130
  27. 2.632
  28. 0.0101
  29. 48090
  30. 269800
  31. 6840
  32. 1465
  33. 38390
  34. 238.6
  35. 0.4215
  36. 2.141
  37. 5660
  38. 374
  39. 46.52
  40. 3031

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