Subtracting using Tidy Numbers

Reflection 

In this activity I had to figure out a problem using Tidy Tens if you don't know what's a Tidy Ten it's something that you have take a way or add to a Tidy number and then you have to separate your little number and find out the answer. First I had to write number 55 in the right corner and and take away 27 in steps. Then we take away 5 from 55 to get to the tidy number then take away a much I want but when I add the numbers it had to be 27.

I am proud of my work cause I achieved all of my success criteria because I can identify what Tidy numbers are and correctly show working on a number line.
I didn't find anything difficult in this work cause I did this before.