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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 334 · 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. 1.389.9 × 1000 =
  2. 2.42.47 × 100 =
  3. 3.114.1 ÷ 10 =
  4. 4.383.1 × 1000 =
  5. 5.120.4 × 10 =
  6. 6.167.8 × 10 =
  7. 7.29.25 × 1000 =
  8. 8.34.01 ÷ 100 =
  9. 9.320.6 ÷ 1000 =
  10. 10.10.04 ÷ 10 =
  11. 11.16.91 × 100 =
  12. 12.166.6 × 10 =
  13. 13.90.1 × 100 =
  14. 14.3.42 ÷ 10 =
  15. 15.23.22 ÷ 1000 =
  16. 16.155.9 × 10 =
  17. 17.380.3 × 10 =
  18. 18.7.8 ÷ 10 =
  19. 19.8.52 ÷ 100 =
  20. 20.37.54 × 1000 =
  21. 21.101.7 ÷ 10 =
  22. 22.4.28 ÷ 10 =
  23. 23.10.37 × 1000 =
  24. 24.159.6 × 100 =
  25. 25.137.7 × 10 =
  26. 26.49.82 × 1000 =
  27. 27.254.9 × 100 =
  28. 28.48.1 × 10 =
  29. 29.209.3 × 1000 =
  30. 30.309.8 ÷ 10 =
  31. 31.479.8 ÷ 1000 =
  32. 32.142.9 × 1000 =
  33. 33.10.64 ÷ 1000 =
  34. 34.109.6 ÷ 100 =
  35. 35.449.7 × 100 =
  36. 36.30.9 ÷ 10 =
  37. 37.353.6 × 100 =
  38. 38.146.1 × 100 =
  39. 39.73.1 × 1000 =
  40. 40.36.08 × 10 =

Answer key

  1. 389900
  2. 4247
  3. 11.41
  4. 383100
  5. 1204
  6. 1678
  7. 29250
  8. 0.3401
  9. 0.3206
  10. 1.004
  11. 1691
  12. 1666
  13. 9010
  14. 0.342
  15. 0.02322
  16. 1559
  17. 3803
  18. 0.78
  19. 0.0852
  20. 37540
  21. 10.17
  22. 0.428
  23. 10370
  24. 15960
  25. 1377
  26. 49820
  27. 25490
  28. 481
  29. 209300
  30. 30.98
  31. 0.4798
  32. 142900
  33. 0.01064
  34. 1.096
  35. 44970
  36. 3.09
  37. 35360
  38. 14610
  39. 73100
  40. 360.8

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