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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 838 · 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. 1.228.9 ÷ 10 =
  2. 2.300.3 ÷ 100 =
  3. 3.409.2 × 10 =
  4. 4.1.71 × 100 =
  5. 5.35.41 ÷ 10 =
  6. 6.22.05 ÷ 100 =
  7. 7.11.01 ÷ 100 =
  8. 8.275.3 × 10 =
  9. 9.441.1 ÷ 10 =
  10. 10.80.8 ÷ 100 =
  11. 11.17.82 ÷ 1000 =
  12. 12.130.3 × 100 =
  13. 13.35.24 × 10 =
  14. 14.12.06 ÷ 10 =
  15. 15.31.32 × 10 =
  16. 16.111.2 ÷ 10 =
  17. 17.192.8 ÷ 100 =
  18. 18.3.92 ÷ 10 =
  19. 19.112.3 ÷ 10 =
  20. 20.390.6 × 100 =
  21. 21.13.57 × 10 =
  22. 22.368.1 ÷ 10 =
  23. 23.5.96 × 10 =
  24. 24.45.95 × 1000 =
  25. 25.6.89 × 1000 =
  26. 26.38.74 × 100 =
  27. 27.2.15 ÷ 10 =
  28. 28.48.04 × 1000 =
  29. 29.34.22 ÷ 10 =
  30. 30.38.1 ÷ 100 =
  31. 31.26.92 ÷ 1000 =
  32. 32.95.7 × 10 =
  33. 33.410.1 × 100 =
  34. 34.44.9 × 100 =
  35. 35.459.7 × 100 =
  36. 36.32.53 ÷ 1000 =
  37. 37.9.31 ÷ 1000 =
  38. 38.292.9 ÷ 10 =
  39. 39.116.8 × 10 =
  40. 40.496.4 × 10 =

Answer key

  1. 22.89
  2. 3.003
  3. 4092
  4. 171
  5. 3.541
  6. 0.2205
  7. 0.1101
  8. 2753
  9. 44.11
  10. 0.808
  11. 0.01782
  12. 13030
  13. 352.4
  14. 1.206
  15. 313.2
  16. 11.12
  17. 1.928
  18. 0.392
  19. 11.23
  20. 39060
  21. 135.7
  22. 36.81
  23. 59.6
  24. 45950
  25. 6890
  26. 3874
  27. 0.215
  28. 48040
  29. 3.422
  30. 0.381
  31. 0.02692
  32. 957
  33. 41010
  34. 4490
  35. 45970
  36. 0.03253
  37. 0.00931
  38. 29.29
  39. 1168
  40. 4964

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