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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 353 · 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. 1.46.89 × 10 =
  2. 2.16.61 ÷ 10 =
  3. 3.33.83 × 100 =
  4. 4.399.7 × 10 =
  5. 5.7.65 × 10 =
  6. 6.31.97 × 100 =
  7. 7.75.4 × 10 =
  8. 8.46.05 × 100 =
  9. 9.39.51 ÷ 10 =
  10. 10.276.2 × 10 =
  11. 11.19.1 × 10 =
  12. 12.8.35 × 1000 =
  13. 13.34.56 ÷ 1000 =
  14. 14.58.4 × 10 =
  15. 15.235.2 × 100 =
  16. 16.12.06 ÷ 10 =
  17. 17.267.8 × 1000 =
  18. 18.25.21 × 1000 =
  19. 19.436.3 ÷ 10 =
  20. 20.18.18 ÷ 1000 =
  21. 21.349.2 × 10 =
  22. 22.448.2 × 100 =
  23. 23.71.3 ÷ 100 =
  24. 24.252.2 × 1000 =
  25. 25.207.6 × 1000 =
  26. 26.424.3 ÷ 100 =
  27. 27.108.3 ÷ 1000 =
  28. 28.7.39 ÷ 10 =
  29. 29.8.82 ÷ 100 =
  30. 30.291.7 × 10 =
  31. 31.48.95 ÷ 100 =
  32. 32.114.8 ÷ 1000 =
  33. 33.6.81 × 10 =
  34. 34.6.45 ÷ 10 =
  35. 35.292.4 × 1000 =
  36. 36.28.53 ÷ 10 =
  37. 37.420.3 ÷ 10 =
  38. 38.135.4 ÷ 100 =
  39. 39.22.6 ÷ 100 =
  40. 40.446.7 ÷ 10 =

Answer key

  1. 468.9
  2. 1.661
  3. 3383
  4. 3997
  5. 76.5
  6. 3197
  7. 754
  8. 4605
  9. 3.951
  10. 2762
  11. 191
  12. 8350
  13. 0.03456
  14. 584
  15. 23520
  16. 1.206
  17. 267800
  18. 25210
  19. 43.63
  20. 0.01818
  21. 3492
  22. 44820
  23. 0.713
  24. 252200
  25. 207600
  26. 4.243
  27. 0.1083
  28. 0.739
  29. 0.0882
  30. 2917
  31. 0.4895
  32. 0.1148
  33. 68.1
  34. 0.645
  35. 292400
  36. 2.853
  37. 42.03
  38. 1.354
  39. 0.226
  40. 44.67

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