numbers that name part of a whole or part of a group. 1 2 1 4 1 3
TRANSCRIPT
Numbers that name part of a whole or part of a group.
1
2
1
4
1
3
Click on an Arrow Button to Learn About Fractions With the
Four Basic Operations:
Click on an arrow button to learn about:
1
4 4
2
+
Adding with the same denominator
1
2 5
3
+
Adding with a different denominator
Adding fractions with like denominators is easy.
3
8
2
8+Like denominators are fractions with the same denominator
To complete this fraction sentence:
3
8
2
8+ =
Add the numerators
Keep the denominators the same
5
8
Add the numerators
Keep the denominators the same
Here are more examples:
4
12
6
12+ =10
12
1
7
4
7+ =5
7
10
25
10
25+ =20
25
Click on the yellow box below to practice adding fractions with like denominators.
Scroll down to the section to practice and check your answers.
Adding Fractions Online - Like
Click on the Education button to complete a worksheet.
Print it off and hand it to your teacher.
Adding fractions with unlike denominators takes more work.
Unlike denominators are fractions with different denominators.
To add these fractions, we need to change them so the denominators are the same (Least Common Denominator - LCD).
3
8
1
4+
3
8
1
4+To answer this question: First we need to find the multiples of both denominators
8
16
24
32
4
8
12
16
The LCD is 8 !
Our fraction denominators will now be 8:
8
8+Now we only
need calculate the numerators!
3
8
1
4+
8
8+
First we find out what number we use to multiply the numerator to the LCD:
x1 x2
We use these numbers to multiply and find the numerator.
3 2
Let us look at some examples:
2
3
3
4+3
6
9
12
4
8
12
16
1
3
2
4+
12
12+x4 x3
4 6
The LCD is 12.
Let us look at one more:
4
7
3
5+7
14
21
28
35
40
45
5
10
15
20
25
30
35
2
7
3
5+
35
35+x5 x7
10 21
The LCD is 35.
Once you have found the LCD – you simply add the numerators and the denominators stay the same!
4
12
6
12+
6
16
4
16+
10
35
21
35+
=10
16
=10
12
=31
35
Click on the yellow box below to practice adding fractions with unlike denominators.
Scroll down to the section to practice and check your answers. Use paper to help you.
Click on the Education button to complete a worksheet.
Print it off and hand it to your teacher.
Adding Fractions Online - Unlike
Click on an arrow button to learn about:
3
4 4
1
-
Subtracting with the same denominator
1
2 7
2
-
Subtracting with a different denominator
Subtracting fractions with like denominators is easy.
4
8
2
8-Like denominators are fractions with the same denominator
To complete this fraction sentence:
4
8
2
8- =
Subtract the numerators
Keep the denominators the same
2
8
Subtract the numerators
Keep the denominators the same
Here are more examples:
6
12
5
12- =1
12
5
7
4
7- =1
7
21
25
13
25- =8
25
Click on the yellow box below to practice subtracting fractions with like denominators.
Scroll down to the section to practice and check your answers.
Click on the Education button to complete a worksheet.
Print it off and hand it to your teacher.
Subtracting Fractions Online - Like
Subtracting fractions with unlike denominators takes more work.
Unlike denominators are fractions with different denominators.
To subtract these fractions, we need to change them so the denominators are the same (Least Common Denominator - LCD).
5
8
1
4-
5
8
1
4-To answer this question: First we need to find the multiples of both denominators
8
16
24
32
4
8
12
16
The LCD is 8 !
Our fraction denominators will now be 8:
8
8-Now we only
need calculate the numerators!
5
8
1
4-
8
8-
First we find out what number we use to multiply the numerator to the LCD:
x1 x2
We use these numbers to multiply and find the numerator.
5 2
Let us look at some examples:
3
4
2
3-4
8
12
16
3
6
9
12
3
4
2
3-
12
12-x3 x4
9 8
The LCD is 12.
Let us look at one more:
5
7
2
5-7
14
21
28
35
40
45
5
10
15
20
25
30
35
5
7
2
5-
35
35-x5 x7
25 14
The LCD is 35.
Once you have found the LCD – you simply subtract the numerators and the denominators stay the same!
7
12
3
12-
6
16
4
16-
30
35
15
35-
=2
16
=4
12
=15
35
Click on the yellow box below to practice subtracting fractions with unlike denominators.
Scroll down to the section to practice and check your answers.
Click on the Education button to complete a worksheet.
Print it off and hand it to your teacher.
Subtracting Fractions Online - Unlike
2
3 7
3x
Multiplying fractions is easy.
3
4
2
5x
It doesn’t matter whether the denominators are the same or different!
To complete this fraction sentence:
3
4
2
5x =
Multiply the numerators
Multiply the denominators
6
20
Multiply the numerators
Multiply the denominators
Here are more examples:
2
12
2
3x =
4
36
1
7
3
5x =
3
35
2
6
8
10x =
16
60
Don’t forget to simplify/reduce your fraction!
Click on the yellow box below to practice multiplying fractions.
Scroll down to the section to practice and check your answers. Use paper to help you simplify them.
Click on the button below to complete a worksheet.
Print it off and hand it to your teacher.
Multiplying Fractions Online
2
3 7
3
Dividing fractions only has a couple of steps.
3
4
2
5
The first thing to do is change it into a multiplication problem.
3
4x
5
2
To do this, you simply turn-over (invert) the numerator and denominator of the latter fraction.
Our question started as:
3
4
2
5
Then we changed it to:
3
4x
5
2We simply complete this problem in the same regular
way we answer any multiplying fraction problem.
That is:
3
4x
5
2
Don’t forget to simplify/reduce the fraction!
Multiply the numerators
Multiply the denominators= 15
8
Click on the yellow box below to practice dividing fractions.
Scroll down to the section to practice and check your answers. Use paper to help you simplify them.
Click on the Education button to complete a worksheet.
Print it off and hand it to your teacher.
Dividing Fractions Online