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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 798 · 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. 1.132.1 × 10 =
  2. 2.67.9 ÷ 1000 =
  3. 3.99.7 × 100 =
  4. 4.30.62 × 10 =
  5. 5.3.34 × 1000 =
  6. 6.7.8 × 10 =
  7. 7.489.5 × 1000 =
  8. 8.60.3 ÷ 100 =
  9. 9.27.3 ÷ 1000 =
  10. 10.296.4 × 1000 =
  11. 11.66.7 ÷ 10 =
  12. 12.12.47 ÷ 100 =
  13. 13.228.8 ÷ 100 =
  14. 14.308.8 ÷ 1000 =
  15. 15.51.1 × 100 =
  16. 16.119.6 ÷ 10 =
  17. 17.354.6 × 1000 =
  18. 18.226.8 ÷ 100 =
  19. 19.94.7 ÷ 10 =
  20. 20.126.1 ÷ 1000 =
  21. 21.7.67 × 1000 =
  22. 22.29.1 × 1000 =
  23. 23.385.9 × 100 =
  24. 24.33.07 × 1000 =
  25. 25.112.8 ÷ 10 =
  26. 26.466.4 × 100 =
  27. 27.32.29 ÷ 10 =
  28. 28.31.39 ÷ 100 =
  29. 29.372.3 ÷ 10 =
  30. 30.196.9 × 10 =
  31. 31.139.6 ÷ 100 =
  32. 32.441.6 × 1000 =
  33. 33.192.3 ÷ 100 =
  34. 34.174.3 × 10 =
  35. 35.318.1 × 100 =
  36. 36.200.1 ÷ 10 =
  37. 37.191.7 × 1000 =
  38. 38.13.24 × 10 =
  39. 39.256.7 × 100 =
  40. 40.244.9 × 100 =

Answer key

  1. 1321
  2. 0.0679
  3. 9970
  4. 306.2
  5. 3340
  6. 78
  7. 489500
  8. 0.603
  9. 0.0273
  10. 296400
  11. 6.67
  12. 0.1247
  13. 2.288
  14. 0.3088
  15. 5110
  16. 11.96
  17. 354600
  18. 2.268
  19. 9.47
  20. 0.1261
  21. 7670
  22. 29100
  23. 38590
  24. 33070
  25. 11.28
  26. 46640
  27. 3.229
  28. 0.3139
  29. 37.23
  30. 1969
  31. 1.396
  32. 441600
  33. 1.923
  34. 1743
  35. 31810
  36. 20.01
  37. 191700
  38. 132.4
  39. 25670
  40. 24490

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