options: Interpret the structure of expressions.

Represent and analyze quantitative relationships between dependent and independent variables.

Add and subtract within 20.

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

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

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

Represent and solve problems involving multiplication and division.

Perform arithmetic operations on polynomials.

Represent and solve problems involving addition and subtraction.

Generate and analyze patterns.

Work with radicals and integer exponents.

Solve equations and inequalities in one variable.

Use polynomial identities to solve problems.

Work with addition and subtraction equations.

Write expressions in equivalent forms to solve problems.

Multiply and divide within 100.

Apply and extend previous understandings of arithmetic to algebraic expressions.

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

Rewrite rational expressions.

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

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.

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

Use properties of operations to generate equivalent expressions.

Represent and solve equations and inequalities graphically.

Understand the relationship between zeros and factors of polynomials.

Use the four operations with whole numbers to solve problems.

Solve systems of equations.

Reason about and solve one-variable equations and inequalities.

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

Write and interpret numerical expressions.

Create equations that describe numbers or relationships

Analyze patterns and relationships.

Gain familiarity with factors and multiples.
problem_activity: Task
Anna enjoys dinner at a restaurant in Washington, D.C., where the sales tax on meals is 10%. She leaves a 15% tip on the price of her meal before the sales tax is added, and the tax is calculated on the pre-tip amount. She spends a total of \$27.50 for dinner. What is the cost of her dinner without tax or tip?


correct_option_index: 16

21

28