How To Solve Problems With Fractions

How To Solve Problems With Fractions-89
When adding and subtracting fractions the denominators must be the same. If we wish to combine or take away parts we must be talking about the same sized parts, otherwise it would get confusing.Multiply by a form of one to change the denominators into a common size.

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The only thing we have to do is: As you can see, the only difference in fraction word problems is step 5 (simplify).

There are some word problems which, depending on the information provided, we should express as a fraction.

Solution: Answer: The electrician needs to cut 13 sixteenths cm of wire.

Example 9: A carpenter had a piece of wood that was 15 feet in length.

Today we are going to look at some examples of word problems with fractions.

Although they may seem more difficult, in reality, word problems involving fractions are just as easy as those involving whole numbers.

Example 7: A warehouse has 12 and nine-tenths meters of tape in one area of the building, and eight and three-fifths meters of tape in another part. Analysis: To solve this problem, we will add two mixed numbers, with the fractional parts having unlike denominators.

Solution: Answer: The warehouse has 21 and one-half meters of tape in all.

So multiply the first fraction by 3/3 and the second by 7/7.

If you can’t think of the least common denominator, you can always multiply each fraction by the opposite denomination.


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