Question

-15+4+13+(-5)

Answer 1

-3

Answer 2

have you woked it out? what did you get?

Answer 3

you could put the two negative numbers together first, giving you 4 + 13 - 20...
then put the positive numbers together giving you 17 - 20. now the difference between 17 and 20 is three, but when you subtract a number that is larger than the first number, it becomes negative, thus: -3