8th Grade · Expressions & Equations
Context Check
8.EE.C.7b
Definition
Confirming that a solution is reasonable and valid within the real-world situation of the problem, such as being positive, a whole number, or a sensible size.
Examples
- 6 miles at a taxi rate checks out: 2(6)+3=15 dollars matches the given cost.
- A solution of x = -4 buses fails the context check — you can't have negative buses.
Key rule
After solving, ask: is the answer positive, whole, and reasonable in size?
Memory hook
Does the answer make sense in real life?