: Problems designed to build abstract thinking and critical reasoning skills.

Example : "On the table were 14 large plates and 3 more small plates than large ones. How many total plates were there?".

: A classic resource for curriculum-based assignments. Available at AbeBooks.com .

: Problems that require identifying multiple pieces of information and choosing the correct strategy to solve them.

: A foundational textbook used in many schools that focuses on applied mathematics. It is available at retailers like eBay .