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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 718 · 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. 1.107.4 ÷ 100 =
  2. 2.139.2 × 100 =
  3. 3.72.1 × 100 =
  4. 4.148.6 × 1000 =
  5. 5.384.6 × 100 =
  6. 6.21.76 ÷ 100 =
  7. 7.470.1 ÷ 100 =
  8. 8.302.5 ÷ 10 =
  9. 9.41.45 × 100 =
  10. 10.220.1 ÷ 100 =
  11. 11.463.4 ÷ 1000 =
  12. 12.100.5 × 10 =
  13. 13.34.42 × 1000 =
  14. 14.438.2 × 1000 =
  15. 15.31.84 × 1000 =
  16. 16.0.59 × 10 =
  17. 17.23.51 × 100 =
  18. 18.49.06 × 10 =
  19. 19.496.4 ÷ 1000 =
  20. 20.48.29 × 1000 =
  21. 21.7.34 × 1000 =
  22. 22.47.18 × 1000 =
  23. 23.2.73 ÷ 1000 =
  24. 24.45.62 × 10 =
  25. 25.72.6 × 100 =
  26. 26.43.45 × 10 =
  27. 27.12.46 × 10 =
  28. 28.41.77 ÷ 10 =
  29. 29.4.51 × 10 =
  30. 30.314.3 × 10 =
  31. 31.8.05 × 1000 =
  32. 32.45.72 × 1000 =
  33. 33.101.1 × 1000 =
  34. 34.31.65 × 10 =
  35. 35.16.21 × 1000 =
  36. 36.40.23 ÷ 100 =
  37. 37.5.1 × 1000 =
  38. 38.153.7 ÷ 10 =
  39. 39.155.5 ÷ 1000 =
  40. 40.51.2 × 10 =

Answer key

  1. 1.074
  2. 13920
  3. 7210
  4. 148600
  5. 38460
  6. 0.2176
  7. 4.701
  8. 30.25
  9. 4145
  10. 2.201
  11. 0.4634
  12. 1005
  13. 34420
  14. 438200
  15. 31840
  16. 5.9
  17. 2351
  18. 490.6
  19. 0.4964
  20. 48290
  21. 7340
  22. 47180
  23. 0.00273
  24. 456.2
  25. 7260
  26. 434.5
  27. 124.6
  28. 4.177
  29. 45.1
  30. 3143
  31. 8050
  32. 45720
  33. 101100
  34. 316.5
  35. 16210
  36. 0.4023
  37. 5100
  38. 15.37
  39. 0.1555
  40. 512

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