options: Work with radicals and integer exponents.

Multiply and divide within 100.

Use polynomial identities to solve problems.

Perform arithmetic operations on polynomials.

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

Create equations that describe numbers or relationships

Generate and analyze patterns.

Work with addition and subtraction equations.

Represent and analyze quantitative relationships between dependent and independent variables.

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

Understand the relationship between zeros and factors of polynomials.

Solve systems of equations.

Interpret the structure of expressions.

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

Rewrite rational expressions.

Use properties of operations to generate equivalent expressions.

Represent and solve problems involving multiplication and division.

Analyze patterns and relationships.

Add and subtract within 20.

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

Gain familiarity with factors and multiples.

Reason about and solve one-variable equations and inequalities.

Use the four operations with whole numbers to solve problems.

Represent and solve equations and inequalities graphically.

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

Write and interpret numerical expressions.

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

Apply and extend previous understandings of arithmetic to algebraic expressions.

Represent and solve problems involving addition and subtraction.

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

Write expressions in equivalent forms to solve problems.

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

Solve equations and inequalities in one variable.

Understand solving equations as a process of reasoning and explain the reasoning.
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: 20