Marrisa added 1.56 and 13.47. she got 29.07. what mistake could marrisa have made?

Marrisa didin't line up decimals correctly.

Step-by-step explanation:

We have been given that Marrisa added 1.56 and 13.47. She got 29.07. We are asked to find Marrisa's mistake.

Marrisa made a mistake, while writing 1.56 and 13.47 as a addition problem, We didn't place decimal correctly. She would have placed her digit as show below:

  13.47

+ 1.56  

 29.07

The correct answer would be:

  13.47

+   1.56  

  15.03

Therefore, Marrisa didin't line up decimals correctly.

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