Unit Rate with rounding

Unit Rate with rounding

Do you need to round for unit price?

When you are doing unit price you are trying to figure out how much for one item. To do this you need to divide.

What do I do with this really big number and where do I round to.

But sometimes when you divide you get this REALLY BIG DECIMAL NUMBER!!! (MRS. STEIGERWALT HELP!!!) Divide $2.98 by 15.5 = 0.192258065 : (

Ok let's look

So first you need only three places after the decimal. 3 - 1, 2, 3. Forget about the rest. Cover it up with your thumb if you need to on your calculator. So our number 0.0192258065 - becomes 0.019. Then that number in the thousandths place the 9 he tells the hundredths what to do. So you get 0.02.

Now you try....

1.)  $13.57  $\div$  12 = 
2.)  $115.63  $\div$  25 =
3.)  $2.24  $\div$  9.75 =
4.)  $11.16  $\div$  3 = 
5.) $53.79  $\div$  12.3 =