Write an expression for the model. Find the sum.
A. 2 + 3; 5
B. 2 + (–3); 1
C. 2 + (–3); –1
D. –3 + 2; 5
A. 2 + 3; 5
my answer was wrong
To determine the correct answer, we need to evaluate the given expressions and find the sum.
A. 2 + 3; 5
In this expression, we add 2 and 3, which equals 5. Therefore, the sum is 5.
B. 2 + (–3); 1
In this expression, we add 2 and -3. To simplify this, we combine the like terms. When we add a positive number to a negative number, it is the same as subtracting the absolute value of the smaller number from the absolute value of the larger number. In this case, the absolute value of 2 is larger than -3, so we subtract 3 from 2. Doing so, we get -1. Therefore, the sum is 1.
C. 2 + (–3); –1
This option is the same expression as B, and we already determined that the sum is 1. So, this option is incorrect.
D. –3 + 2; 5
In this expression, we add -3 and 2. When we add a negative number to a positive number, it is the same as subtracting the absolute value of the smaller number from the absolute value of the larger number. In this case, the absolute value of 2 is larger than -3, so we subtract 3 from 2. Doing so, we get -1. Therefore, the sum is -1.
Based on the evaluation of the given expressions, we can see that the correct answer is B. 2 + (–3); 1.