The Evaluating expressions in one variable exercise appears under the 6th grade (U.S.) Math Mission and Algebra I Math Mission. This exercise helps in the basic understanding of Algebra.
Types of problems
- Evaluate the following expression when = a number - This problem gives the user an expression with an unknown and a number added of subtracted to that unknown . The user is to substitute the value into the expression and evaluate it.
Strategies
- It is not so easy to get the accuracy badges and speed badges in this exercise. Substituting the into the expression and evaluating it may take some time.
Real-life Applications
- Work problems often ask us to calculate how long it will take different people working at different speeds to finish a task. The algebraic models of such situations often involve rational equations derived from the work formula, . The amount of work done () is the product of the rate of work () and the time spent working (). The work formula has 3 versions:
- Knowledge of algebra is essential for higher math levels like trigonometry and calculus. Algebra also has countless applications in the real world.