Every time I do this for an assignment I do it wrong. How does this work.

Question

Use lattice multiplication to find the product.

222 ×  172

Reiny · Answer

Please, please, tell your teacher to drop this ridiculous lattice method and teach you the popular and universally accepted way to multiply.

bwb · Answer

I still have to do this how do you do it?

Reiny · Answer

The woman in this clip shows 3 ways to do the same multiplication, the lattice method is one of them http://www.youtube.com/watch?v=Tr1qee-bTZI

bwb · Answer

thank you

Anonymous · Answer

Use lattice multiplication to find the product. 222 × 172