Using simple grouping strategies with Place Value (1)

You need to show evidence that you can solve these problems independently in the same way shown in these videos.

Could you show your teacher how to solve the problem below,

using the same strategy used in these videos?

Peter had 35 cats and 52 dogs. How many animals did Peter have altogether?

Sam had 26 books and was given 63 more. How many books did Sam have altogether?