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Find the difference between the place values of the two 7s in 69758472.

Difficulty: Easy

Correct Answer: 699930

Explanation:

Given data

  • Number: 69758472 (8 digits)
  • Two 7s: positions from left are 3rd and 7th digits.

Concept / Approach

  • Place value = digit × (place weight). From right, weights are 1, 10, 100, 1000, …

Step-by-step identification

Digits (with place): 6(10^7), 9(10^6), 7(10^5), 5(10^4), 8(10^3), 4(10^2), 7(10^1), 2(10^0)Place value of left 7: 7 × 10^5 = 700000Place value of right 7: 7 × 10^1 = 70Difference = 700000 − 70 = 699930


Verification

Both place values computed from positional weights; subtraction straightforward.


Common pitfalls

  • Confusing face value (7) with place value (e.g., 700000).
  • Off-by-one in counting positions from the right.

Final Answer

699930

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