# Peter's calculation

Peter wrote the following: 7 1/4 - 3 3/4 = 4 2/4 = 4 1/2 . Is Peter's calculation correct? Using words (math vocabulary) and numbers to explain why he is correct or incorrect.

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**Dr Math**

Can't be subtracted whole parts and fractions part in opposite direction.

7 1/4 - 3 3/4 = whole (7-3) and fraction part (3-1)/4 = 4 and fraction part 2/4 = 4 1/2

7 1/4 - 3 3/4 = whole (7-3) and fraction part (3-1)/4 = 4 and fraction part 2/4 = 4 1/2

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