One day 22% of the 900 students are absent. how many students were absent?

You would simply do 900 times .22 because to change a percent to a decimal for multiplication you simply move the decimal 2 places to the left. so 900 x .22 = 198 students absent. hope this helps

198 because 22%=0.22  so you do 0.22*900 and that's how you get 198

Heptagon is the correct ans