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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 659 · 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. 1.8.12 × 10 =
  2. 2.150.6 ÷ 1000 =
  3. 3.58.1 × 100 =
  4. 4.26.45 ÷ 1000 =
  5. 5.253.8 ÷ 10 =
  6. 6.122.8 ÷ 10 =
  7. 7.41.4 ÷ 10 =
  8. 8.475.2 ÷ 100 =
  9. 9.29.96 × 100 =
  10. 10.37.76 × 10 =
  11. 11.32.5 ÷ 10 =
  12. 12.19.59 × 10 =
  13. 13.82.4 × 10 =
  14. 14.171.5 × 1000 =
  15. 15.7.02 × 10 =
  16. 16.12.95 × 1000 =
  17. 17.404.3 × 10 =
  18. 18.77.7 × 10 =
  19. 19.455.1 × 100 =
  20. 20.370.6 ÷ 1000 =
  21. 21.88.1 ÷ 100 =
  22. 22.169.6 × 100 =
  23. 23.311.3 ÷ 10 =
  24. 24.13.96 × 100 =
  25. 25.489.2 ÷ 10 =
  26. 26.2.36 ÷ 10 =
  27. 27.16.32 × 100 =
  28. 28.493.4 ÷ 10 =
  29. 29.88.2 × 1000 =
  30. 30.19.32 × 100 =
  31. 31.15.57 ÷ 100 =
  32. 32.8.91 ÷ 1000 =
  33. 33.3.41 × 100 =
  34. 34.148.4 ÷ 100 =
  35. 35.45.41 × 1000 =
  36. 36.243.5 × 10 =
  37. 37.7.71 × 10 =
  38. 38.186.4 × 100 =
  39. 39.37.76 × 10 =
  40. 40.314.7 ÷ 1000 =

Answer key

  1. 81.2
  2. 0.1506
  3. 5810
  4. 0.02645
  5. 25.38
  6. 12.28
  7. 4.14
  8. 4.752
  9. 2996
  10. 377.6
  11. 3.25
  12. 195.9
  13. 824
  14. 171500
  15. 70.2
  16. 12950
  17. 4043
  18. 777
  19. 45510
  20. 0.3706
  21. 0.881
  22. 16960
  23. 31.13
  24. 1396
  25. 48.92
  26. 0.236
  27. 1632
  28. 49.34
  29. 88200
  30. 1932
  31. 0.1557
  32. 0.00891
  33. 341
  34. 1.484
  35. 45410
  36. 2435
  37. 77.1
  38. 18640
  39. 377.6
  40. 0.3147

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