Complete 1, 2 or all 3 challenges and post your answers and comments in the comment section below.
I had 10 apples and I ate 3. How many apples do I have left?
There were 20 raisins in a packet. I ate 3 and then my friend ate 4. How many are left?
There were 30 birds in the garden. 7 of them were red, 6 were yellow and the rest were blue. How many blue birds were there?