options: Use properties of operations to generate equivalent expressions.

Write and interpret numerical expressions.

Create equations that describe numbers or relationships

Write expressions in equivalent forms to solve problems.

Represent and solve equations and inequalities graphically.

Understand the connections between proportional relationships, lines, and linear equations.

Use the four operations with whole numbers to solve problems.

Solve equations and inequalities in one variable.

Solve systems of equations.

Work with addition and subtraction equations.

Work with radicals and integer exponents.

Interpret the structure of expressions.

Analyze patterns and relationships.

Multiply and divide within 100.

Reason about and solve one-variable equations and inequalities.

Solve problems involving the four operations, and identify and explain patterns in arithmetic.

Understand properties of multiplication and the relationship between multiplication and division.

Work with equal groups of objects to gain foundations for multiplication.

Solve real-life and mathematical problems using numerical and algebraic expressions and equations.

Understand solving equations as a process of reasoning and explain the reasoning.

Represent and solve problems involving addition and subtraction.

Understand and apply properties of operations and the relationship between addition and subtraction.

Represent and analyze quantitative relationships between dependent and independent variables.

Represent and solve problems involving multiplication and division.

Perform arithmetic operations on polynomials.

Generate and analyze patterns.

Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.

Analyze and solve linear equations and pairs of simultaneous linear equations.

Use polynomial identities to solve problems.

Add and subtract within 20.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Rewrite rational expressions.

Gain familiarity with factors and multiples.

Understand the relationship between zeros and factors of polynomials.
problem_activity: Task
The students in Mr. Sanchez's class are converting distances measured in miles to kilometers. To estimate the number of kilometers, Abby takes the number of miles, doubles it, then subtracts 20% of the result. Renato ﬁrst divides the number of miles by 5, then multiplies the result by 8.
Write an algebraic expression for each method.
Use your answer to part (a) to decide if the two methods give the same answer.


correct_option_index: 0