options: Multiply and divide within 100.

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

Solve equations and inequalities in one variable.

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

Rewrite rational expressions.

Create equations that describe numbers or relationships

Write and interpret numerical expressions.

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

Perform arithmetic operations on polynomials.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Use the four operations with whole numbers to solve problems.

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

Understand the relationship between zeros and factors of polynomials.

Gain familiarity with factors and multiples.

Analyze patterns and relationships.

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

Represent and solve problems involving addition and subtraction.

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

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

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

Solve systems of equations.

Reason about and solve one-variable equations and inequalities.

Use polynomial identities to solve problems.

Interpret the structure of expressions.

Represent and solve problems involving multiplication and division.

Represent and solve equations and inequalities graphically.

Write expressions in equivalent forms to solve problems.

Use properties of operations to generate equivalent expressions.

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

Represent and analyze quantitative relationships between dependent and independent variables.

Work with radicals and integer exponents.

Generate and analyze patterns.

Work with addition and subtraction equations.

Add and subtract within 20.
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: 23