Question

Why is 3 + (−5) equal to −2?

1-
Because it is 5 units to the left of 0 on a horizontal number line
2- Because it is 5 units to the right of 3 on a horizontal number line
3- Because it is 5 units to the left of 3 on a horizontal number line
4- Because it is 5 units to the right of 0 on a horizontal number line

Answer 1

3 + (-5)

when you add a negative number, you are subtracting

so you can re-write this as 3 - 5

based on that, what do you think? when we subtract, do we go left or right on the number line?

Answer 2

I think it's B

Answer 3

I meant C

Answer 4

Yeah me too

Answer 5

C (or choice 3) is correct. when you subtract, you go left on a number line. so yes, you start at 3 and go left 5 units. well done.