Answer:
A+B=B+A
B+0=B
E-C=E+(-C)
Step-by-step explanation:
Here's a good rhyming rule to keep in mind.
Zero to four, you get no more.
Five to nine, move up one time.
With this rule you can see that there is a 5 at the end, therefor you should round up. Your number is 720.
