Understanding Algebraic Expressions

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What are constants in algebraic expressions?

Numbers that change in value

Symbols of addition, subtraction, multiplication, or division

Numbers like 5, 39, and 2 (correct)

Letters whose values are not known

Which of the following is an example of a numerical expression?

8x + 9y

12 x 3 (correct)

x + y - z

Evaluate the expression two x divided by seven times four

What is the order of operations in solving algebraic expressions?

MDASPE

PEMDAS (correct)

MSDEAP

EDPAMS

Which mnemonic device helps to remember the order of operations in algebraic expressions?

PEMDAS Signup and view all the answers

What happens if the order of operations is not followed when solving an algebraic expression?

Drastically different answers may be obtained Signup and view all the answers

When evaluating algebraic expressions using PEMDAS, what is the first thing to look for?

Parenthesis Signup and view all the answers

In numerical expressions, what is solved first according to the PEMDAS order of operations?

Exponents Signup and view all the answers

What should be done first when evaluating variable expressions?

Substitute values for the variables Signup and view all the answers

In variable expressions, what is needed in addition to following the PEMDAS order of operations?

Substituting values for the variables Signup and view all the answers

What should be done first in Example 2: Evaluate the algebraic expression where b = 11?

Substitute value for b Signup and view all the answers

Understanding Algebraic Expressions

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Questions and Answers

What are constants in algebraic expressions?

Which of the following is an example of a numerical expression?

What is the order of operations in solving algebraic expressions?

Which mnemonic device helps to remember the order of operations in algebraic expressions?

What happens if the order of operations is not followed when solving an algebraic expression?

When evaluating algebraic expressions using PEMDAS, what is the first thing to look for?

In numerical expressions, what is solved first according to the PEMDAS order of operations?

What should be done first when evaluating variable expressions?

In variable expressions, what is needed in addition to following the PEMDAS order of operations?

What should be done first in Example 2: Evaluate the algebraic expression where b = 11?

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