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

Work with addition and subtraction equations.

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

Represent and solve problems involving addition and subtraction.

Write expressions in equivalent forms to solve problems.

Rewrite rational expressions.

Represent and analyze quantitative relationships between dependent and independent variables.

Use polynomial identities to solve problems.

Create equations that describe numbers or relationships

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

Analyze patterns and relationships.

Add and subtract within 20.

Solve systems of equations.

Solve equations and inequalities in one variable.

Use properties of operations to generate equivalent expressions.

Work with radicals and integer exponents.

Use the four operations with whole numbers to solve problems.

Represent and solve equations and inequalities graphically.

Gain familiarity with factors and multiples.

Perform arithmetic operations on polynomials.

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

Generate and analyze patterns.

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

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

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

Represent and solve problems involving multiplication and division.

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

Reason about and solve one-variable equations and inequalities.

Understand the relationship between zeros and factors of polynomials.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Write and interpret numerical expressions.

Multiply and divide within 100.

Interpret the structure of expressions.

Solve problems involving the four operations, and identify and explain patterns in arithmetic.
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: 32