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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 11 · 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. 1.137.1 × 100 =
  2. 2.41.85 ÷ 100 =
  3. 3.49.86 × 10 =
  4. 4.8.03 ÷ 100 =
  5. 5.6.77 × 100 =
  6. 6.366.1 ÷ 1000 =
  7. 7.9.63 ÷ 1000 =
  8. 8.191.1 × 1000 =
  9. 9.43.11 × 10 =
  10. 10.267.8 × 100 =
  11. 11.122.4 × 100 =
  12. 12.22.2 ÷ 100 =
  13. 13.33.42 × 100 =
  14. 14.99.5 × 100 =
  15. 15.46.17 ÷ 10 =
  16. 16.16.99 ÷ 100 =
  17. 17.11.13 ÷ 100 =
  18. 18.8.29 × 10 =
  19. 19.102.8 × 100 =
  20. 20.286.1 ÷ 100 =
  21. 21.5.91 × 1000 =
  22. 22.169.3 ÷ 1000 =
  23. 23.345.1 × 10 =
  24. 24.44.45 ÷ 100 =
  25. 25.453.8 × 10 =
  26. 26.65.3 ÷ 100 =
  27. 27.25.9 × 10 =
  28. 28.14.47 ÷ 10 =
  29. 29.93.1 × 10 =
  30. 30.34.9 ÷ 10 =
  31. 31.62.8 × 1000 =
  32. 32.472.7 × 10 =
  33. 33.344.8 × 1000 =
  34. 34.445.1 × 100 =
  35. 35.22.41 ÷ 100 =
  36. 36.22.54 ÷ 10 =
  37. 37.172.3 ÷ 10 =
  38. 38.300.5 ÷ 100 =
  39. 39.13.35 × 100 =
  40. 40.422.4 × 10 =

Answer key

  1. 13710
  2. 0.4185
  3. 498.6
  4. 0.0803
  5. 677
  6. 0.3661
  7. 0.00963
  8. 191100
  9. 431.1
  10. 26780
  11. 12240
  12. 0.222
  13. 3342
  14. 9950
  15. 4.617
  16. 0.1699
  17. 0.1113
  18. 82.9
  19. 10280
  20. 2.861
  21. 5910
  22. 0.1693
  23. 3451
  24. 0.4445
  25. 4538
  26. 0.653
  27. 259
  28. 1.447
  29. 931
  30. 3.49
  31. 62800
  32. 4727
  33. 344800
  34. 44510
  35. 0.2241
  36. 2.254
  37. 17.23
  38. 3.005
  39. 1335
  40. 4224

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