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

Use the four operations with whole numbers to solve problems.

Multiply and divide within 100.

Solve equations and inequalities in one variable.

Write expressions in equivalent forms to solve problems.

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

Analyze patterns and relationships.

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

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

Perform arithmetic operations on polynomials.

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.

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

Gain familiarity with factors and multiples.

Generate and analyze patterns.

Reason about and solve one-variable equations and inequalities.

Work with radicals and integer exponents.

Represent and solve problems involving addition and subtraction.

Solve systems of equations.

Use polynomial identities to solve problems.

Work with addition and subtraction equations.

Rewrite rational expressions.

Use properties of operations to generate equivalent expressions.

Understand the relationship between zeros and factors of polynomials.

Represent and analyze quantitative relationships between dependent and independent variables.

Add and subtract within 20.

Represent and solve problems involving multiplication and division.

Interpret the structure of expressions.

Create equations that describe numbers or relationships

Represent and solve equations and inequalities graphically.

Write and interpret numerical expressions.

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

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

Apply and extend previous understandings of arithmetic to algebraic expressions.
problem_activity: Task
Consider the algebraic expressions below:
$$ (n + 2)^2 - 4 \qquad \text{and} \qquad n^2 + 4n. $$
Use the figures below to illustrate why the expressions are equivalent:
[IMG]
Find some ways to algebraically verify the same result.


correct_option_index: 27