Question

How do you use common core (mental math) to find the answer to:

8×25×23=?

Answer 1

Mental math I'd split it up and simplify it first.

8 × 25 is 4 × 25 two times. So 100 times anything is just the number plus two zeros usually so 

8 × 25 × 23
100 × 23 
2300                               2300 Is the answer