Write an expression for the model. Find the sum. options: a) 2 + (-3); 1 b) - 3 + 2; 5 c) 2 + 3; 5 d) 2 + (-3); - 1

c) 2 + 3 = 5 TRUE

d) 2 + (-3) = - 1 True

Step-by-step explanation:

When adding integers (positive and negative whole numbers), there are three cases:

Positive and positive increases and sum is positive. Ex. 4 + 6 = 10 Positive and negative where you subtract and take the sign of the larger number. Ex. 3 + - 8 = - 5 or - 3 + 8 = 5 Negative and negative decrease and the sum if negative. Ex. - 4 + - 6 = - 10.

Use these rules to simplify each expression.

a) 2 + (-3) = - 1 not 1 FALSE

b) - 3 + 2 = - 1 not 5 FALSE

c) 2 + 3 = 5 TRUE

d) 2 + (-3) = - 1 True