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Adding Two-Digit Numbers (Elementary)

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make the smallest (or largest) sum.

Hint

Hint

In the two-digit number, what does the digit on the left represent?  What does the digit on the right represent?

Answer

Answer

97 + 86 is one answer for the largest sum.  13 + 24 is the smallest sum.

Source: Robert Kaplinsky

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