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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 944 · 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. 1.280.5 ÷ 100 =
  2. 2.30.44 × 100 =
  3. 3.6.41 ÷ 1000 =
  4. 4.481.1 × 100 =
  5. 5.422.7 ÷ 100 =
  6. 6.48.06 × 10 =
  7. 7.383.8 ÷ 100 =
  8. 8.48.32 ÷ 1000 =
  9. 9.241.8 × 10 =
  10. 10.40.59 ÷ 1000 =
  11. 11.12.18 × 1000 =
  12. 12.15.47 × 10 =
  13. 13.45.99 × 100 =
  14. 14.453.8 × 1000 =
  15. 15.498.6 × 100 =
  16. 16.35.65 ÷ 1000 =
  17. 17.119.1 ÷ 100 =
  18. 18.110.1 × 10 =
  19. 19.45.3 ÷ 10 =
  20. 20.388.1 ÷ 1000 =
  21. 21.9.56 × 100 =
  22. 22.32.2 × 1000 =
  23. 23.35.57 ÷ 100 =
  24. 24.374.6 ÷ 100 =
  25. 25.12.06 ÷ 100 =
  26. 26.37.11 ÷ 1000 =
  27. 27.238.2 × 1000 =
  28. 28.95.1 × 10 =
  29. 29.252.8 × 10 =
  30. 30.140.2 ÷ 1000 =
  31. 31.373.3 × 100 =
  32. 32.13.11 × 10 =
  33. 33.275.7 ÷ 100 =
  34. 34.3.21 × 10 =
  35. 35.40.16 × 100 =
  36. 36.23.98 ÷ 10 =
  37. 37.291.1 ÷ 1000 =
  38. 38.20.73 × 10 =
  39. 39.324.9 ÷ 100 =
  40. 40.9.66 ÷ 100 =

Answer key

  1. 2.805
  2. 3044
  3. 0.00641
  4. 48110
  5. 4.227
  6. 480.6
  7. 3.838
  8. 0.04832
  9. 2418
  10. 0.04059
  11. 12180
  12. 154.7
  13. 4599
  14. 453800
  15. 49860
  16. 0.03565
  17. 1.191
  18. 1101
  19. 4.53
  20. 0.3881
  21. 956
  22. 32200
  23. 0.3557
  24. 3.746
  25. 0.1206
  26. 0.03711
  27. 238200
  28. 951
  29. 2528
  30. 0.1402
  31. 37330
  32. 131.1
  33. 2.757
  34. 32.1
  35. 4016
  36. 2.398
  37. 0.2911
  38. 207.3
  39. 3.249
  40. 0.0966

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