Question

How do you solve this 3.009 + -7.100=

Answer 1

-4.091

Explanation:

3.009-7.1

an easy way to explain this is to swap it, then swap the sign. Think of it as 7.1-3.009, then add the negative sign back to your answer. 7-3 is 4

.1-.009=.09

7.1-3.009=4.09

thus, 3.009-7.1=-4.