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Problem of the Week
Problem B
That’s About Right

  1. Place the digits \(1\), \(3\), \(6\), \(7\), \(8\), and \(9\) in the boxes shown so that each box contains a different digit, and the sum is as close as possible to \(99\).

    Six boxes are arranged to represent the digits in an addition problem written vertically. A two-digit integer is added to another two-digit integer and the result is also two-digit integer.

  2. The digits \(5\), \(6\), and \(8\) have been placed in three of the boxes shown. Place the digits \(0\), \(1\), \(2\), \(3\), \(4\), \(7,\) and \(9\) in the remaining boxes so that each box contains a different digit, and the sum is as close as possible to \(1000\).

    Ten boxes are arranged to represent the digits in an addition problem written vertically. A three-digit integer with tens digit 8 is added to a three-digit integer with hundreds digit 5. The result is a four-digit integer with ones digit 6.

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Theme: Number Sense