## anonymous one year ago @iGreen A student earned a grade of 80% on a Math Test that had 20 problems. How many problems on this test did the student answer correctly?

1. iGreen

Multiply..

2. iGreen

80% * 20 = ?

3. iGreen

$$\sf 80\% \rightarrow 0.80$$

4. iGreen

Remember, percentages are parts of 100, so to simplify a percentage, just divide it by 100. $$\sf 80\% \rightarrow \dfrac{80}{100} \rightarrow 0.80$$

5. anonymous

Oh okay. o.o

6. anonymous

Okay, that's 16. o.o

7. iGreen

Yep, that's our answer..the student got 16 questions correct out of 20. To check, divide. $$\sf \dfrac{16}{20} \rightarrow 0.80 \rightarrow 80\%$$

8. anonymous

Ohhhh okay. I'm in Summer School for only Math, you make it so easy, for me it just seem really hard..

9. iGreen

That's what I'm here for $$\Huge\ddot\smile$$

10. anonymous

^_^ So sweet.