# Review of Basic Mathematical Skills

• Add, subtract, multiply, and divide whole numbers

• Add, subtract, multiply, and divide fractions and reduce fractions to the lowest terms

• Add, subtract, multiply, and divide mixed numbers and reduce to the lowest terms

• Add, subtract, multiply, and divide decimals and round them to a specific number place value

• Convert fractions to decimal fractions

• Convert among fractions, decimals, and percentages

• Express numbers in ratio and proportion and solve for unknowns

## Fractions

### What Is a Fraction?

If you said the numerator is 5 and the denominator is 6, you are correct.

If a patient has 25 tablets in a prescription and takes 13 tablets, what is the fractional use?

Answer: or . (When is divided by 10 in both the numerator and the denominator, the result is .)