5.4F Simplifying Expressions

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed. It is often remembered by the acronym PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

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CCSS.7.NS.A.3

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by performing operations and combining like terms.

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CCSS.7.EE.A.1

Front

What is a 'like term' in algebra?

Back

Like terms are terms that have the same variable raised to the same power. For example, 2x and 3x are like terms.

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CCSS.6.EE.A.2B

Front

Solve: 2 + 3 * 4

Back

14 (First, multiply 3 and 4 to get 12, then add 2.)

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CCSS.7.NS.A.3

Front

What is the result of 10 ÷ 2 + 5?

Back

10 (First, divide 10 by 2 to get 5, then add 5.)

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

Front

What is the value of the expression: (6 + 2) * 3?

Back

24 (First, add 6 and 2 to get 8, then multiply by 3.)

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

Front

Solve: 5 * (3 + 2) - 4

Back

21 (First, add 3 and 2 to get 5, then multiply by 5 to get 25, and finally subtract 4.)

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

Front

What does it mean to evaluate an expression?

Back

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

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CCSS.6.EE.A.2C

Front

What is the result of 8 - 3 + 2?

Back

7 (First, subtract 3 from 8 to get 5, then add 2.)

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

Front

Solve: 12 - (4 + 2) * 2

Back

6 (First, add 4 and 2 to get 6, then multiply by 2 to get 12, and finally subtract from 12.)

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CCSS.7.NS.A.3