Question

An onion soup recipe calls for 3 cups of chopped onions. Katrina has already chopped 1.5 cups of onions. She wants to know how many more cups she needs to chop. Let æ be the number of cups of onions Katrina still needs to chop. Write an equation to describe the situation.

a) 3 - 1.5 = æ
b) 3 + 1.5 = æ
c) 3 ÷ 1.5 = æ
d) 3 × 1.5 = æ

Answer 1

Katrina needs to chop an additional 1.5 cups of onions to have the total 3 cups required for the recipe. We use subtraction to find the difference between what she has and what is needed: 3 - 1.5 = 1.5.

Step-by-step explanation:

The question asks us to find the number of cups of onions Katrina still needs to chop to meet the requirement of the onion soup recipe. The recipe calls for a total of 3 cups of chopped onions, and Katrina has already chopped 1.5 cups.

Using an equation to express the situation, we can write: 3 - 1.5 = æ, where æ represents the number of cups still needed.

We subtract the amount she has already chopped (1.5 cups) from the total amount needed (3 cups), which gives us: 3 - 1.5 = 1.5. Therefore, Katrina needs to chop an additional 1.5 cups of onions.