thank you so much for these videos, i am in year 10 and have been struggling with further maths all year, but this is really helping a lot and nice to understand :)
It is the midpoint between 23 and -1, which is 11 and not 12. When you find the midpoint you add the numbers then divide by 2. 23 + (-1) = 22 22/2 = 11 You are probably thinking there is a difference of 24 between them (which is true) and then halving this to get 12. This doesn't mean the midpoint is 12, it means that the midpoint is 12 above -1 (which is 11) and 12 below 23 (also 11) i.e. 23 - 12 = 11 (-1) + 12 = 11 Hope this helps.
