The One-step equations with addition and subtraction exercise appears under the 6th grade (U.S.) Math Mission, 7th grade (U.S.) Math Mission, Algebra basics Math Mission, Algebra I Math Mission and Mathematics II Math Mission. This exercise has one-step equations involving addition and subtraction.
Types of Problems
There is one type of problem in this exercise:
- Solve the given equation: This problem provides an equation that requires one operation to solve. The user is expected to find the correct answer and type it in the space provided.
Strategies
Accuracy badges can be attained on this exercise with knowledge of the properties of equality. Speed badges are attainable because there is only one step necessary to arrive at the answers.
- When an addition problem is given, subtraction solves for the variable. Subtraction is non-commutative so care needs to be taken with the order of subtraction.
- When a subtraction problem is given, addition solves for the variable. Addition is commutative so order is irrelevant.
- It can be faster if one can recognize the number that needs to replaced in the equation to make it true.
Real-life Applications
- Knowledge of algebra is essential for higher math levels like trigonometry and calculus. Algebra also has countless applications in the real world.
- An ability to find the steps and the instances of error is a skill that is useful in teaching.
- Linear equations, as the initial stage of polynomials, have many applications in several fields of study.
- Equations show up in nearly every science or business class one is ever in.
- Computers are also equation solvers. Computers were originally invented to solve equations over and over again instead of humans doing the calculations.