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

Use the four operations with whole numbers to solve problems.

Represent and solve problems involving multiplication and division.

Reason about and solve one-variable equations and inequalities.

Perform arithmetic operations on polynomials.

Work with radicals and integer exponents.

Write and interpret numerical expressions.

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

Add and subtract within 20.

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

Solve systems of equations.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Generate and analyze patterns.

Gain familiarity with factors and multiples.

Analyze patterns and relationships.

Represent and analyze quantitative relationships between dependent and independent variables.

Multiply and divide within 100.

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

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

Use polynomial identities to solve problems.

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

Solve equations and inequalities in one variable.

Rewrite rational expressions.

Represent and solve problems involving addition and subtraction.

Represent and solve equations and inequalities graphically.

Create equations that describe numbers or relationships

Use properties of operations to generate equivalent expressions.

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

Interpret the structure of expressions.

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

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

Write expressions in equivalent forms to solve problems.

Work with addition and subtraction equations.

Understand the relationship between zeros and factors of polynomials.
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: 3

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