Maths dad jokes

Sums, numbers and a dog who cannot do either. Zero has something to say about what the eight is wearing.

1. Dad joke #13 I asked my dog what two minus two is. He said nothing.
2. Dad joke #28 Why did the maths book look sad? It had too many problems.
3. Dad joke #79 What did the zero say to the eight? Nice belt.
4. Dad joke #97 What do you call a hen who counts her eggs? A mathemachicken.