Usually the easiest way to solve this is by using a calculator. Of course only if your teacher allows you too.
Answer:

Step-by-step explanation:
Express as product of prime factors.


The greatest common factor is the product of the least powers of the common factors.
The GCF is

Answer:
the blue dot is at -11 value on the number line.
She can Hang up 4 posters. Because Taylor only has 16 tacks.
16/4=4
Answer:
25
Step-by-step explanation:
So the denominator can be simplified to 5⁴ →
and then the 3's cancel out and we are left with 5⁴
Now our new fraction is
which then simplifies to 25