Question

give any examples of fraction of addit

Answer 1

Examples

Example 1

Solve:  

changing both fractions to a common denominator (see comments on the right)

 

 

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Comments:

To solve this problem, first we will need to look at the denominators 3 and 5 and see what multiples of these numbers are common.

Multiples of 3 are:

3 6 9 12 15 18 21

Multiples of 5 are:

5 10 15 20 25

so, in multiples of 3 and 5 the least common multiple is 15.

now, we will change 1/3 and 2/5 into their equivalent fractions with denominator 15:

 

Example 2

Solve:  

Changing both fractions to a common denominator (see comments on the right)

FRACAD11.GIF (968 bytes)

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Comments:

Again, we need to look at the denominators first and see what multiples of them are common:

Multiples of 12:

12 24 36

Multiples of 2:

2 4 6 8 10 12 14

So, we find that 12 is the least common multiple.

 

 

 

 

 

 

Have a Go

Problem 1

Solve:

 

See Solution

 

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Problem 2

Solve:

 

See Solution

 

 

 

 

 

 

 

 

Practice Questions

Question 1

 

Question 2

 

 

Question 3

 

Question 4

 

Question 5

 

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Question 6

 

 

 

 

 

 

 

 

 

Solution 1

Solve:

First we need to find the least common multiple of 6 and 9:

6= 6 12 18 24

9= 9 18 27

Now we need to convert both fractions to a common denomintor of 18

This is an improper fraction with the numerator larger than the denominator. We can simply this by dividing 31 by 18 and writing the remainder as a fraction:

back to Have a Go

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Solution 2

Solve:

This is addition of mixed fractions. Here we can add the whole numbers separately and re-write the fraction as:

Changing the fractions to their equivalent fractions with a common denominator

Answer 2

Please write the full question


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