options: Interpret the structure of expressions.

Multiply and divide within 100.

Understand the relationship between zeros and factors of polynomials.

Create equations that describe numbers or relationships

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

Solve systems of equations.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Represent and solve problems involving multiplication and division.

Reason about and solve one-variable equations and inequalities.

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

Write expressions in equivalent forms to solve problems.

Rewrite rational expressions.

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

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

Solve equations and inequalities in one variable.

Perform arithmetic operations on polynomials.

Represent and solve equations and inequalities graphically.

Use the four operations with whole numbers to solve problems.

Gain familiarity with factors and multiples.

Represent and analyze quantitative relationships between dependent and independent variables.

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

Use polynomial identities to solve problems.

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

Write and interpret numerical expressions.

Generate and analyze patterns.

Represent and solve problems involving addition and subtraction.

Work with radicals and integer exponents.

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

Add and subtract within 20.

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

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

Use properties of operations to generate equivalent expressions.

Work with addition and subtraction equations.

Analyze patterns and relationships.
problem_activity: Task
A water well drilling rig has dug to a height of –60 feet after one full day of continuous use.
Assuming the rig drilled at a constant rate, what was the height of the drill after 15 hours?
If the rig has been running constantly and is currently at a height of –143.6 feet, for how long has the rig been running?


correct_option_index: 27