Question

Molly has cups of sugar. She used cup of sugar. She wants to model a subtraction problem on a number line to find how much sugar she has left. Molly’s first step is shown below.

What should Molly do next, and how much sugar does she have left?
A. Move units to the right. She has cups of sugar left.

B. Move unit to the left. She has cup of sugar left.

C. Move units to the left. She has cup of sugar left.

D. Move unit to the right. She has cups of sugar left.

Answer 1

The answer is B

Explanation:

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

We have been given that Molly has 1 1/2 cups of sugar. She used 3/4 cup of sugar.

1 1/2 simplified as 3/2, and 3/2 not simplified as 6/4.

Since she wants to use 3/4 of the sugar, then we need to do

6/4 - 3/4 = 3/4,

Therefore, the amount of sugar Molly had left would be 3/4.

Answer 2

It was 1 1/2 and 3/4 cups

Explanation: