Monday

September 1, 2014

September 1, 2014

Posted by **chrissy** on Monday, August 6, 2007 at 10:13pm.

A bread piece calls for 3 1/4 cups of flour if you only have 2 1/8 cup. How much more flour is needed?

3 1/4 -2 1/8= 13/4 - 17/9 how does it equal 13/4 can someone show me that part? I thought I knew how to subtract fractions but I dont get it.

3 1/4 - 2 1/8 = 13/4 - 17/8 =

26/8 - 17/8 = 9/8 = 1 1/8

All you do is multiply the whole number by the denominator and then add the numerator: 3 x 4 + 1 = 13. Then put the 13 over 4, and you have changed the mixed number to a improper fraction that can be used in an addition or subtraction problem.

How will you convert the second mixed number in the problem? (Hint: 17/9 is not correct.)

Then, before you can subtract (or add) fractions, you have to convert them so they have common denominators. The obvious common denominator between ?/4 and ?/8 is 8, so that's not a problem; just convert the first fraction so the demoninator is 8.

http://www.themathpage.com/ARITH/fractions.htm

Let me know what you come up with.

=)

ok durr i think i just had a brain fart or something thanks.

**Answer this Question**

**Related Questions**

math - jeanine used 2 1/2 cups of flour to make muffins and 1 3/4 cups of flour ...

math 2 - Ben is making a bread that calls for 5 cups of flour. He only has 1/2 ...

algebra - a bread recipe calls for 2/3 cup of rye flour. you only have 3/4 cup ...

Math - Here is the question: "To make a pancake mix, add 1/2 cup of sugar, 3 ...

math - A recipe calls for 1 1/3 cups of flour. Harold has 1/2 cup of flour. How ...

Algebra - Here is the problem: You are going to make ans sell bread. A loaf of ...

Math - A recipe for cake calls for 5 and 1/4 cup of flour. The chef mistakenly ...

math - A recipe calls for 6 1/2 cups of flour. You have 4 3/4 cupa. How much ...

Math - 2 cups of flour = 6 cookies x cups of flour = 10 cookies I found out that...

math - You need 2b cups of flour for making b loaves of bread. You have 8 cups ...