DISSIMILAR FRACTION Lesson Slides: 7 Slides (Grade 8)

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1

DISSIMILAR FRACTION

fractions are fractions with different denominators

2

Look at some examples:

$\frac{1}{2}+\frac{1}{3}=$
$\frac{1}{6}-\frac{1}{4}=$
$\frac{1}{8}+\frac{1}{7}=$

3

There are 2 basic steps

for solving dissimilar fraction

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CHANGE ALL UNLIKE FRACTIONS INTO LIKE FRACTION

we need to change the denaminators of the fractions into a common denominator.

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PROCEED WITH THE SAME PROCEDURE AS ADDING AND SUBTRACTING SIMILAR FRACTIONS

We will follow the same procedure of similar fraction

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Example no.1

$\frac{1}{2}+\frac{1}{4}=$

find the common multiple of 2 and 4
4= 2x2
2=2x1
the LCD of 4and 2 is 4 as result of 2x2
$\ \frac{1}{2}\ +\frac{1}{4}=\frac{ }{4}\ +\ \frac{ }{4}=$
$\frac{1}{2}+\frac{1}{4}=\frac{2}{4}+\frac{1}{4}=\frac{3}{4}$
$\frac{3}{4}$ is the final answer

7

Example no.2

$\frac{2}{3}+\frac{1}{4}=$

find the common multiple of 3 and 4
3=3x1
4=2x2
3x2x2=12
$\frac{2}{3}+\frac{1}{4}=\frac{ }{12}+\frac{ }{12}$
$\frac{2}{3}+\frac{1}{4}=\frac{8}{12}+\frac{3}{12}=\frac{11}{12}$
$\frac{11}{12}$ is the final answer

DISSIMILAR FRACTION

fractions are fractions with different denominators

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