Praxis Core Academic Skills for Educators: Mathematics (5733)Number and QuantityEasy
A recipe for a large batch of cookies requires 2/3 cup of brown sugar. If a baker decides to make only 3/4 of the recipe, how much brown sugar will be needed?
- A1/2 cup
- B5/12 cup
- C1/4 cup
- D7/12 cup
Show answer & explanationAnswer & explanation
Correct answer: A. 1/2 cup
To find the amount of brown sugar needed, multiply the original amount by the fraction of the recipe being made. (2/3) * (3/4) = 6/12, which simplifies to 1/2.
Why the other options are wrong
- B. This results from an incorrect calculation, possibly addition or subtraction instead of multiplication.
- C. This results from an incorrect multiplication or simplification.
- D. This results from an incorrect calculation or simplification.
Multiplying Fractions
To multiply fractions, multiply the numerators together and multiply the denominators together. Simplify the resulting fraction if possible.
- Numerator * Numerator
- Denominator * Denominator
- Simplify the product
Memory trick: Fractions: Cut, Share, Multiply to Reduce, Add to Combine.