When adding and subtracting fractions, just remember that as long as you have the SAME DENOMINATOR, then it is easy-peasy-lemon-squeezy!
If you don’t start with the same denominators, then find the LCM (Lowest Common Multiple) of the denominator in both fractions. Remember, that this is exactly the same if you are working with a Mixed Number (A number with whole/s and a fraction), but you just need to remember to add the whole numbers together as well!
E.G. 41/3 + 6 5/9 = the LCM of both fractions is 18, so whatever you do to the bottom, you must do to the top to find an equivalent fraction (but only multiply or divide remember).
Now we have 46/18 + 6 10/18 = NOTICE that I have only changed the fractions to find ones that are equivalent, but the whole numbers have stayed the same.
46/18 + 6 10/18 = 10 16/18 (add the whole number first, and then the fractions second).
If you are adding improper fractions (fractions with a higher numerator and a lower denominator), e.g. 7/5 , then still find the LCM of both fractions, but when you find the answer, convert the improper fraction to a mixed number.
7/5 + 12/10 = 14/10 + 12/10 = 26/10 … because 10/10 is the SAME as ONE WHOLE, you know you have TWO WHOLES in the improper fraction ( 20/10 ) … and 6/10 left over.
Therefore, your FINAL ANSWER will be 2 6/10
REMEMBER whenever you are working with fractions, it is ALWAYS okay to draw bars/diagrams to help you with your working out! Colour code and draw as much as you need!
Task 1: Spend some time on TT Rockstars today! I am looking at your progress each day and will keep setting different tables for you to work on! Remember how important they are, and they will really help you in the coming weeks with your maths work.
Task 2: Use your maths time to also complete any of the extension task activities you’ve not yet managed to try out from this weeks work! Challenge yourself and see if you can problem solve! You will feel such a rush of excitement when you finally manage to solve a tricky question!
26.03.2020 - See below for ANSWERS to the Subtracting Fractions sheet