options: Represent and solve problems involving addition and subtraction.

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

Solve systems of equations.

Write and interpret numerical expressions.

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

Gain familiarity with factors and multiples.

Represent and analyze quantitative relationships between dependent and independent variables.

Use polynomial identities to solve problems.

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

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

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

Generate and analyze patterns.

Perform arithmetic operations on polynomials.

Create equations that describe numbers or relationships

Interpret the structure of expressions.

Understand the relationship between zeros and factors of polynomials.

Reason about and solve one-variable equations and inequalities.

Use properties of operations to generate equivalent expressions.

Work with radicals and integer exponents.

Write expressions in equivalent forms to solve problems.

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

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

Multiply and divide within 100.

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

Analyze patterns and relationships.

Represent and solve problems involving multiplication and division.

Rewrite rational expressions.

Use the four operations with whole numbers to solve problems.

Represent and solve equations and inequalities graphically.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Solve equations and inequalities in one variable.

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

Work with addition and subtraction equations.

Add and subtract within 20.
problem_activity: Problem 1
Solve the equation below. For each step, explain why each line of your work is equivalent to the line before it.
$${\frac{1}{2}(-12x+4)+5x=\frac{2}{3}(24)}$$
Problem 2
Find and explain the error in the work below.
$${15=-3(m-2)-9}$$
$${15=-3m+6-9}$$
$${15=-3m-3}$$
$${12=-3m}$$
$${m=-4}$$


correct_option_index: 21