Problem 22: Carl looked at the page numbers on the open book in front of him. The left and right page numbers added to 333. What were the page numbers?

Predict: I predict I will need to use division and addition in this problem.

Clarify: I have no words, sentences or phrases to clarify.

Find the big question: What are the page numbers?

Solve:

- I need to start by splitting 333 in half, because they need to be consecutive. Picture a book, the page numbers are consecutive,, aren’t they?
- It is 166.5 but I will round that up to 167.
- 167+168=335.
- So I will round down to 166.
- 166+167=333!

Summary:

The mathematicians toolbox strategy I used in this problem was break it into manageable parts.