Sugar Cookie Recipe

by Alison Bazel

Problem
A sugar cookie recipe calls for 4 1/2 cups of sugar. Alison wants to make 2/3 of the normal amount of sugar. How much sugar will Alison use in her recipe?

Solution

To find the amount of sugar Alison will need, you need to multiply.

But first, you convert 4 1/2 cups of sugar to 9/2. You get 9/2 by multiplying the denominator, 2, by the whole number, 4 (which equals 8).

Next you will add the 8 to the numerator, 1. That will give you 9. Lastly, you keep the denominator of the fraction from the mixed number, which is 2. That gives you 9/2.

Now you will multiply 9/2 by 2/3. You can do 9x2 and 2x3, but you can do it with simpler numbers so the multiplication is easier for you.

You can do something called cross simplifying. First, to cross simplify, you will see if the opposite fractions' numerator and denominator go into each other.

For example, the denominator of 2/3, 3, goes into 9 three times. So you can cross out nine and replace it to three. But then you have to do the same with the opposite denominator.

3 goes into 3 once, so you would cross off the three and replace it with one. You can do the same with the other numerator and denominators, too.

Both the numerator and denominator would be simplified to one. Now, all you have to do is multiply 3x1 and 1x1.

Your answer should be 3.

So, Alison will use three cups of sugar instead of 4 1/2.

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Basic math word problem.





Recent Articles

  1. Linear Parent Function

    Nov 20, 17 11:18 AM

    What is a linear parent function? Crystal clear explanation.

    Read More

New math lessons

Your email is safe with us. We will only use it to inform you about new math lessons.

            Follow me on Pinterest





Recent Lessons

  1. Linear Parent Function

    Nov 20, 17 11:18 AM

    What is a linear parent function? Crystal clear explanation.

    Read More

  Our Top Pages

Formula for percentage

Compatible numbers

Basic math test

Basic math formulas

Types of angles

Math problem solver

Algebra word problems

Surface area of a cube

Finding the average 

Scale drawings

Tough Algebra Word Problems.

If you can solve these problems with no help, you must be a genius!


Everything you need to prepare for an important exam!

K-12 tests, GED math test, basic math tests, geometry tests, algebra tests. 


Real Life Math Skills

Learn about investing money, budgeting your money, paying taxes, mortgage loans, and even the math involved in playing baseball.

 Recommended

Scientific Notation Quiz

Types of Angles Quiz

Graphing Slope Quiz

Adding and Subtracting Matrices Quiz  

Factoring Trinomials Quiz 

Solving Absolute Value Equations Quiz  

Order of Operations Quiz