Praxis Core Academic Skills for Educators: Mathematics (5733)Number and QuantityEasy
A recipe requires 3/4 cup of milk. If a chef wants to make 2/3 of the recipe, how much milk is needed?
- A6/7 cup
- B5/12 cup
- C1/2 cup
- D8/9 cup
Show answer & explanationAnswer & explanation
Correct answer: C. 1/2 cup
To find a fraction of another fraction, multiply the two fractions together. Simplify the result if possible.
Why the other options are wrong
- A. This is an incorrect calculation, possibly from adding numerators and denominators.
- B. This is the result of adding 3/4 and 2/3, which is incorrect.
- D. This is an incorrect calculation, possibly from inverting one fraction before multiplying.
Multiplying Fractions
To multiply fractions, multiply the numerators together and multiply the denominators together. Simplify the resulting fraction if possible.
- Multiply numerators across.
- Multiply denominators across.
- Simplify before or after multiplication for easier calculation.
Memory trick: Numerator times numerator, denominator times denominator, then simplify.