Four alternatives to the four fours

The "Four Fours" is a very well-known little problem that encourages some creative thinking and use of the order of operations. The purpose of this post is to show you four fourfoursesque puzzles I've created which have encouraged some great learning.

You can read the rest of this blog post, and two followup blog posts, in PDF form here.

The titles of the three posts in the series are:

• Four alternatives to the four fours
• A day of maths: Zero Zeros
• The second part of the four fours