Question

1. nutrition the calories in a breakfast sandwich come from three sources: 144 calories are from carbohydrates, 108 calories are from fat, and 56 calories are from protein. use properties of addition to find the total number of calories in the sandwich.

Explanation:

Step1: Identify the calorie - sources

We have calorie amounts from carbohydrates ($144$), fat ($108$), and protein ($56$).

Step2: Apply the addition property

The total calories $C$ is the sum of calories from each source. So $C = 144+108 + 56$.
Using the associative property of addition, we can first add $144$ and $56$: $(144 + 56)+108$.
$144+56=200$.
Then $200 + 108=308$.

Answer:

$308$