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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 932 · 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. 1.34.35 ÷ 10 =
  2. 2.5.81 ÷ 100 =
  3. 3.40.38 ÷ 10 =
  4. 4.14.74 ÷ 100 =
  5. 5.310.4 × 10 =
  6. 6.190.8 ÷ 100 =
  7. 7.106.5 × 1000 =
  8. 8.74.6 ÷ 10 =
  9. 9.23.14 × 10 =
  10. 10.15.88 ÷ 1000 =
  11. 11.168.5 ÷ 10 =
  12. 12.13.42 × 10 =
  13. 13.310.7 × 1000 =
  14. 14.16.12 × 1000 =
  15. 15.210.9 × 10 =
  16. 16.129.4 ÷ 10 =
  17. 17.353.9 × 100 =
  18. 18.303.1 × 1000 =
  19. 19.332.8 ÷ 10 =
  20. 20.283.6 × 100 =
  21. 21.319.8 × 1000 =
  22. 22.225.6 × 1000 =
  23. 23.164.8 × 100 =
  24. 24.248.1 ÷ 1000 =
  25. 25.1.26 ÷ 10 =
  26. 26.438.3 ÷ 1000 =
  27. 27.29.51 ÷ 100 =
  28. 28.31.07 ÷ 10 =
  29. 29.251.9 ÷ 10 =
  30. 30.29.99 ÷ 100 =
  31. 31.191.6 ÷ 1000 =
  32. 32.10.22 × 10 =
  33. 33.197.4 × 100 =
  34. 34.79.7 ÷ 1000 =
  35. 35.58.9 × 1000 =
  36. 36.46.99 × 100 =
  37. 37.1.32 ÷ 100 =
  38. 38.44.91 ÷ 100 =
  39. 39.37.2 ÷ 1000 =
  40. 40.249.5 ÷ 1000 =

Answer key

  1. 3.435
  2. 0.0581
  3. 4.038
  4. 0.1474
  5. 3104
  6. 1.908
  7. 106500
  8. 7.46
  9. 231.4
  10. 0.01588
  11. 16.85
  12. 134.2
  13. 310700
  14. 16120
  15. 2109
  16. 12.94
  17. 35390
  18. 303100
  19. 33.28
  20. 28360
  21. 319800
  22. 225600
  23. 16480
  24. 0.2481
  25. 0.126
  26. 0.4383
  27. 0.2951
  28. 3.107
  29. 25.19
  30. 0.2999
  31. 0.1916
  32. 102.2
  33. 19740
  34. 0.0797
  35. 58900
  36. 4699
  37. 0.0132
  38. 0.4491
  39. 0.0372
  40. 0.2495

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