math fractions

a Mary rose Chan & Aly ssa Gallano Pro duc tion 8 - 73

Maryrose and I decided on making a wikispace for our un-project. All the information will be here and there will be come questions for you to answer. Its something like the wikispace we made for our parents, for the conferences .

con tents

Mult iply ing fr ac tions

One of the biggest mistakes people make when they are multiplying fractions is that they cross-multiply. The trick is to multiply across.

Remember, fractions with any whole number over one still equals the original amount.
Contents

What about the common denominator? What about it? You don't need common denominators when you multiply fractions.

Ans wer th is ques tion
Multiply the following fractions. Put them in they're lowest terms and in pictorial form.

Mult iply ing fr ac tions w ith a wh ole num ber

First, multiply the whole number with the denominator. This is the same method used if both fractions had whole numbers.
Keep the denominator from the old fraction.

Put the new fraction into its lowest terms.

Ans wer th is ques tion
Multiply the following fractions. Put them in they're lowest terms and in pictorial form.

Multiply ing fract ions : cr oss red uce

W hy w e cr oss re duce
It makes reducing large numbers easier.
It is a faster way to get to the lowest terms of a fraction.

H ow t o cr oss re duce
Put each number into lowest terms

T he e nd
Please check the next PowerPoint presentation on divid ing frac tions

math fractions

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