In this activity, we will add and subtract fractions.
Example
To add or subtract two fractions, the denominators (bottom numbers) must be the same.
If they are not the same, we must first make them the same. We can do this by finding a common multiple of both denominators.
If you look below, we can see a common multiple of 3 and 6 is 6.
We must remember to always apply the same rule to the numerator and the denominator.
We will multiply the denominator by 2 to get 6, so we must also multiply the numerator by 2, which gives us 2/6 (have a look below) which we can now add to 1/6.
1/3 + 1/6 = 2/6 + 1/6 = 3/6 or 1/2
Remember that we never add denominators!
Let's get started on the questions now.
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In this activity, we will add and subtract fractions.
Example
To add or subtract two fractions, the denominators (bottom numbers) must be the same.
If they are not the same, we must first make them the same. We can do this by finding a common multiple of both denominators.
If you look below, we can see a common multiple of 3 and 6 is 6.
We must remember to always apply the same rule to the numerator and the denominator.
We will multiply the denominator by 2 to get 6, so we must also multiply the numerator by 2, which gives us 2/6 (have a look below) which we can now add to 1/6.
1/3 + 1/6 = 2/6 + 1/6 = 3/6 or 1/2
Remember that we never add denominators!
Let's get started on the questions now.
Question
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Teacher explanation