What is an equivalent expression?

An equivalent expression is an expression that has the same value as another expression for all values of the variable(s). For example, $$2(x + 3)$$ is equivalent to $$2x + 6$$ .

How do you simplify the expression $$7(2d + 8)$$ ?

To simplify, use the distributive property: $$7(2d) + 7(8) = 14d + 56$$ .

What is the identity property of addition?

The identity property of addition states that the sum of any number and zero is that number. For example, $$a + 0 = a$$ .

What is the difference between a term and a coefficient?

A term is a single mathematical expression, which can be a number, variable, or the product of numbers and variables. A coefficient is a number that multiplies a variable in a term.

How do you find the total cost of tickets if the cost of z tickets is given by $$6z + 2$$ ?

To find the total cost for 4 tickets, substitute z with 4: $$6(4) + 2 = 24 + 2 = 26$$ .

What does it mean for two expressions to be equivalent?

Two expressions are equivalent if they yield the same value for all possible values of their variables.

What is the expression for half the speed of y miles per hour?

The expression for half the speed is $$y/2$$ .

What is a variable in algebra?

A variable is a symbol, often a letter, that represents one or more numbers. For example, in the expression $$x + 5$$ , $$x$$ is a variable.

Numerical and Algebraic Expressions Review Flashcards

Student preview

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is a numerical expression?

Back

A numerical expression is a mathematical phrase that includes numbers and operations (such as addition, subtraction, multiplication, and division) but does not include variables.

Tags

CCSS.6.EE.A.1

2.

FLASHCARD QUESTION

Front

What is an algebraic expression?

Back

Tags

CCSS.6.EE.A.2B

3.

FLASHCARD QUESTION

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting numbers for the variables and performing the operations.

Tags

CCSS.6.EE.A.2C

4.

FLASHCARD QUESTION

Front

What is the commutative property of addition?

Back

Tags

CCSS.1.OA.B.3

5.

FLASHCARD QUESTION

Front

What is the associative property of addition?

Back

Tags

CCSS.1.OA.B.3

6.

FLASHCARD QUESTION

Front

How do you represent '4 times the difference of 9 and d' in algebraic form?

Back

Tags

CCSS.6.EE.A.2A

7.

FLASHCARD QUESTION

Front

What is the distributive property?

Back

Tags

CCSS.3.OA.B.5

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