Read & Write Expressions

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, ×, ÷) that represents a value.

Tags

CCSS.6.EE.A.2B

Front

What does '10 less than a number' mean in algebraic terms?

Back

It means to subtract 10 from a variable, represented as n - 10.

Tags

CCSS.6.EE.A.2A

Front

How do you express 'the quotient of 20 and a number decreased by 3'?

Back

This is expressed as 20/n - 3.

Tags

CCSS.6.EE.A.2A

Front

What is the product of 8 and a number represented as?

Back

It is represented as 8 x n.

Tags

CCSS.6.EE.B.6

Front

If Addison has some money (m) and earns $20 but spends $10, how do you express her total money now?

Back

The expression is m + 20 - 10.

Tags

CCSS.HSA-SSE.A.1A

Front

How do you express 'Joe has 3 times the number of treats that Jake has'?

Back

If Jake has n treats, Joe has 3n treats.

Tags

CCSS.6.EE.B.6

Front

What is the difference between a variable and a constant?

Back

A variable is a symbol that represents an unknown value, while a constant is a fixed value.

Tags

CCSS.6.EE.A.2B

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with numbers.

Tags

CCSS.6.EE.A.2C

Front

What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

Tags

CCSS.7.NS.A.3

Front

How do you write an expression for 'the sum of a number and 5'?

Back

It is written as n + 5.

Tags

CCSS.6.EE.A.2A