Geometry- Maths Thinking Groups

This week for maths thinking groups we did geometry. We had to predict 3D faces and locate 3D faces. It was really fun because I got to learn something new. I had to estimate the shape's faces and add them up to see if my estimation was right.

The Part Adder!

 Today we used the part adder and our problem that we had to solve was 48 + 49 = ? I used the part adder: make your own hard sums to work this problem out! First I did 20 + 28 which equaled 48 + 2 = 50 + 30 = 80 + 17 = 97!

40 + 8 + 2 = 50 + 30 = 80 + 17 = 97!

18 + 8

I need to solve 18 + 8. I used the part adder tool to solve the problem!