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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 922 · 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. 1.30.09 ÷ 10 =
  2. 2.45.48 × 1000 =
  3. 3.252.3 × 100 =
  4. 4.28.7 × 10 =
  5. 5.286.1 × 10 =
  6. 6.485.9 × 100 =
  7. 7.19.77 × 10 =
  8. 8.23.05 × 10 =
  9. 9.10.11 ÷ 1000 =
  10. 10.12.97 × 10 =
  11. 11.14.51 × 100 =
  12. 12.18.36 × 1000 =
  13. 13.22.62 × 100 =
  14. 14.430.3 × 100 =
  15. 15.384.4 × 10 =
  16. 16.421.3 ÷ 10 =
  17. 17.193.7 × 1000 =
  18. 18.130.1 × 10 =
  19. 19.27.49 × 10 =
  20. 20.410.7 × 10 =
  21. 21.274.5 ÷ 1000 =
  22. 22.13.48 ÷ 100 =
  23. 23.328.1 × 10 =
  24. 24.27.12 ÷ 10 =
  25. 25.30.12 ÷ 1000 =
  26. 26.307.2 × 1000 =
  27. 27.445.4 × 100 =
  28. 28.39.65 × 1000 =
  29. 29.23.09 × 100 =
  30. 30.409.5 ÷ 100 =
  31. 31.4.36 ÷ 1000 =
  32. 32.83.9 × 10 =
  33. 33.353.8 ÷ 1000 =
  34. 34.311.7 × 10 =
  35. 35.406.1 ÷ 10 =
  36. 36.396.7 × 10 =
  37. 37.388.8 ÷ 100 =
  38. 38.42.51 × 100 =
  39. 39.11.61 × 100 =
  40. 40.487.5 × 100 =

Answer key

  1. 3.009
  2. 45480
  3. 25230
  4. 287
  5. 2861
  6. 48590
  7. 197.7
  8. 230.5
  9. 0.01011
  10. 129.7
  11. 1451
  12. 18360
  13. 2262
  14. 43030
  15. 3844
  16. 42.13
  17. 193700
  18. 1301
  19. 274.9
  20. 4107
  21. 0.2745
  22. 0.1348
  23. 3281
  24. 2.712
  25. 0.03012
  26. 307200
  27. 44540
  28. 39650
  29. 2309
  30. 4.095
  31. 0.00436
  32. 839
  33. 0.3538
  34. 3117
  35. 40.61
  36. 3967
  37. 3.888
  38. 4251
  39. 1161
  40. 48750

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