LC: To compare and order fractions
Yesterday, we began to order fractions by comparing them. It is sometimes difficult to compare fractions when they have different denominators - so let's see how to make the denominators the same. This will make it much easier!
We call this FINDING COMMON DENOMINATORS.
2/3 3/4 5/6
If we can find the lowest common multiple (LCM) for the denominators then we can find the lowest common denominator.
What is the lowest common multiple for 3, 4 and 6 (The lowest number that is in the 3, 4 and 6 times tables) - it's 12!
Remember the important rule to keep them equivalent - Whatever we do to the top, we do to the bottom or Whatever we do to the bottom, we do to the top.
2/3 becomes 8/12
3/4 becomes 9/12
5/6 becomes 10/12
So the order from smallest to largest is: 2/3 (because it's the same as 8/12) 3/4 (because it's the same as 9/12) and 5/6 (because it's the same as 10/12).
Let's have a go at the Guided Practice!