Today for online learning maths we had to figure out how many balls would be in the triangle if it went all the way up to 99. I had to have some help with this because my smooth brain can't figure it out on my own. on each line added one more and you had to add all of them up to see how many you got. Once you got to 99 you would have ended up with 4950. But that would have taken ages and a very big triangle to figure out. 

So, to figure it out we made a table with the line number in one column and the number of balls in the next column. We could see that if you divided the number of balls by the line number, the answers on the odd number lines went up by 1 each time. This would still take a long time to add up so we looked for another pattern. We saw that if you halved each odd number and added .5, and then multiplied by the odd number by that number, we got the right number of balls. So we did that with 99 and got 4950.

We did this sum (99/2+0.5) x 99 = 50x99 = 4950.

Of course I had a little help from my mum but I helped to .Do you think you could have figured this out? BYE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!💖✋✋