options: Use properties of operations to generate equivalent expressions.

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

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

Write and interpret numerical expressions.

Work with radicals and integer exponents.

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

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

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

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

Write expressions in equivalent forms to solve problems.

Represent and solve problems involving addition and subtraction.

Add and subtract within 20.

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

Analyze patterns and relationships.

Use the four operations with whole numbers to solve problems.

Generate and analyze patterns.

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

Reason about and solve one-variable equations and inequalities.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Multiply and divide within 100.

Work with addition and subtraction equations.

Represent and solve problems involving multiplication and division.

Interpret the structure of expressions.

Gain familiarity with factors and multiples.

Rewrite rational expressions.

Solve equations and inequalities in one variable.

Solve systems of equations.

Represent and solve equations and inequalities graphically.

Understand the relationship between zeros and factors of polynomials.

Create equations that describe numbers or relationships

Represent and analyze quantitative relationships between dependent and independent variables.

Use polynomial identities to solve problems.

Perform arithmetic operations on polynomials.

Analyze and solve linear equations and pairs of simultaneous linear equations.
problem_activity: Task
The table below shows all the products of pairs of numbers between 1 and 9.
[IMG]
Which numbers appear only once in the table of products?   Where are these numbers located in the table?  Why?
Which numbers appear the most frequently in the table?  Why?
Which numbers between 10 and 20 do  not  appear in the table?  What do these numbers have in common?


correct_option_index: 23