Today, we are going to continue to add fractions. Most of you are getting really good at doing this!
Have a look at the in focus question below.
What fractions do you think we are going to add together?
How do you think we are going to do this?
How could we make sure both denominators are the same?
That’s right. We can change them to 4.
Can you change ½ to quarters?
You should know that 2/4 and ½ are equivalent so if we add 2/4 and ¾ together we get 5/4. This in an improper fraction. Can you remember why?
That's right. It is improper because the numerator is greater than the denominator.
Can you remember how to change this to a mixed fraction?
Well done if you remembered that to change it to a mixed fraction we need to work out how many whole ones are in that fraction and what fraction we are left with.
So 5/4 as a mixed fraction would be 1 and ¼ because 4/4 makes a whole one and we are left with 1/4.
Have a look at the example above. Both denominators are the same so we just need to add the numerators together.
Now in this example both denominators are different and we have to make them the same before we add them together.
We know that 4 and 3 are factors of 12 so if we multiply 4 x 3 = 12 and 3 x 4 = 12.
The diagram shows that we multiply both the top and bottom number so it is the same.
Then, we have changed the fraction to a mixed fraction.
Now, try Q2 above then try the guided practice questions above.
Make sure you remember to have the same denominators, so it is easier to add together.
After the questions, the first 2 boxes are for your fractions after you have changed them and made them the same.
In your final box, you should be making that fraction in its simplest form ( making it smaller).
For example: 5/10 can be made smaller into 1/2 because 10 divided by 5 = 2 (Use your times tables knowledge).
Worksheet 10 below will be sent to you on Seesaw to complete.