Question

Which real-world story is represented by the addition problem (–2) + (–3) = –5?

A. A submarine descended 2 miles and then descended another 3 miles. The submarine is now 5 miles below its original location.

B. A submarine ascended 2 miles and then descended another 3 miles. The submarine is now mile below its original location.

C. A submarine descended 2 miles and then ascended another 3 miles. The submarine is now mile above its original location.

D. A submarine ascended 2 miles and then ascended another 3 miles. The submarine is now 5 miles above its original location.

Answer 1

A.

Explanation:

Answer 2

The answer is A.

If the submarine descended then it went below, and if it ascended it went above. Therefore:

"Descended 2 miles"= -2

"Then descended another 3 miles"= -3

(-2)+(-3)=-5

Adding two negatives together will give you a bigger negative so the submarine would then be 5 miles below its original location.