Question

Tell how the Communicative property of addition and the Associative property of addition can help solve the problem mentally 8+(-5)+(-8)

Answer 1

Step-by-step explanation:

Communicative property states that, in addition, integers added in any order will still give the same answer.

So in this question,

rather than first adding 8 + (-5), we add 8 + (-8)

We know that a number + its additive Inverse (opposite sign) is equal to zero

And we know any number added to zero is equal to the number.

So we can quickly find out that the sum is -5

Answer 2

Answer:

Communicative property states that, in addition, integers added in any order will still give the same answer. and a negative and a positive cancel out and your left with negative five so negative five would be your answer

Step-by-step explanation: