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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 193 · 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. 1.39.18 × 1000 =
  2. 2.21.24 × 10 =
  3. 3.7.61 × 100 =
  4. 4.29.29 ÷ 100 =
  5. 5.4.7 × 10 =
  6. 6.5.08 ÷ 10 =
  7. 7.218.1 ÷ 10 =
  8. 8.216.3 ÷ 10 =
  9. 9.21.84 × 1000 =
  10. 10.87.8 ÷ 10 =
  11. 11.4.56 ÷ 10 =
  12. 12.37.11 × 10 =
  13. 13.25.9 ÷ 1000 =
  14. 14.296.1 ÷ 1000 =
  15. 15.107.9 × 10 =
  16. 16.49.64 ÷ 100 =
  17. 17.30.01 ÷ 1000 =
  18. 18.29.1 × 10 =
  19. 19.10.98 × 100 =
  20. 20.2.36 ÷ 10 =
  21. 21.41.33 × 1000 =
  22. 22.90.1 ÷ 100 =
  23. 23.9.55 × 100 =
  24. 24.211.5 × 10 =
  25. 25.364.8 × 1000 =
  26. 26.254.1 × 1000 =
  27. 27.42.01 ÷ 100 =
  28. 28.281.8 ÷ 1000 =
  29. 29.5.7 × 10 =
  30. 30.21.03 × 100 =
  31. 31.37.63 × 100 =
  32. 32.39.86 × 10 =
  33. 33.15.62 ÷ 1000 =
  34. 34.10.94 ÷ 1000 =
  35. 35.33.95 × 100 =
  36. 36.488.2 × 10 =
  37. 37.324.9 ÷ 100 =
  38. 38.120.1 × 1000 =
  39. 39.0.52 × 100 =
  40. 40.240.2 × 10 =

Answer key

  1. 39180
  2. 212.4
  3. 761
  4. 0.2929
  5. 47
  6. 0.508
  7. 21.81
  8. 21.63
  9. 21840
  10. 8.78
  11. 0.456
  12. 371.1
  13. 0.0259
  14. 0.2961
  15. 1079
  16. 0.4964
  17. 0.03001
  18. 291
  19. 1098
  20. 0.236
  21. 41330
  22. 0.901
  23. 955
  24. 2115
  25. 364800
  26. 254100
  27. 0.4201
  28. 0.2818
  29. 57
  30. 2103
  31. 3763
  32. 398.6
  33. 0.01562
  34. 0.01094
  35. 3395
  36. 4882
  37. 3.249
  38. 120100
  39. 52
  40. 2402

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