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Study Guide : Decimals and Fractions

Learner Guide

 

Decimals and Fractions


Fractions

L.O- To be able to multiply, divide, add and subtract fractions.Students

should also be able to equalize the denominators of  fractions and use

this in more complicated fraction questions.

 

Multiplying Fractions

To multiply fractions, simply multiply the top and bottom separately.

 

Example

4/5  x  1/3  = ?

4/5  x 1/3  = 4 x 1/5 x 3 – 4/15

The answer is 4/15

 

Steps Multiply the ‘top numbers’ of the fractions together à this gives you the ‘top number’ of your answer.

 

Multiply the ‘bottom numbers’ of the fractions together à this gives you the ‘bottom number’ of your answer.

top numbers’ = numerators

‘bottom numbers’ = denominators

 

Dividing Fractions

To divide fractions, turn the 2nd fraction upside down and then multiply the

fractions as normal.

 

Example

5/6  ÷ 3/5 = ?

5/6 ÷ 3/5 = 5/6  x 5/3

x=  5/6  x 5/3 = 5  x 5/6  x 3 – 25/18

The answer is 25/18.

 

Steps Turn the 2nd fraction upside down

Now, multiply the two fractions (as done above)

 

1 2 3 4 5

 

Related Topics


Speed-distance-and-time         Ratio-and-proportion          Fractions-de-percentages



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