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Adding Two Digit Numbers Without Renaming

How to add two two-digit numbers (for example 45 + 53).

• Place one number above the other number so that the tens' place digits and ones' place digits are lined up. Draw a line under the bottom number.
45
53

• Add the two ones' place digits (5 + 3 = 8).
45
53
8

• Add the numbers in the tens' place column (4 + 5 = 9) and place the answer below the line and to the left of the ones' place sum.
45
53
98

Find the Sum of the two Numbers

 +     =

2006-10-02 20:08:56
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