Tag
#equations
2 essays cross-referencing this thread.

Arithmetic
Math Memory Match: Pair Each Equation With Its Answer
Play a complete six-card round, say the answer before searching, and separate calculation mistakes from forgetting where a matching card sits.

Algebra
Missing Number Equations: Choose the Inverse, Then Check
Read what the blank represents, choose the matching inverse operation, and put the answer back into the original equation to catch mistakes.