I created this to challenge my second grade math students. It aligns to/extends Common Core Standard:
CCSS.Math.Content.2.OA.A.1 Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.
There are 3 sheets each with 4 problems. Each sheet has 1 higher-order thinking question. The first sheet uses addition, the second uses subtraction, and the third uses both.
Answer key is included