Step-by-step explanation: To round, look to the number in the place value beside the place value given. In yours, look to the hundredths place because it's to the right of the tenths place. In the number is 5 or more, add one to the given place value. 4 or less, leave it alone and as is. After the given value, make everything a zero.
if you multiply the denominators by 3, you get "out of" 21. All you need to do after that is multiply the top by 3 as well and it tells you there are 9 boys and 12 girls.
