L5.1-5.2 Review Big Ideas Math-6th grade

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What are coefficients in an algebraic expression?

Back

Coefficients are the numerical factors in terms of an algebraic expression. For example, in the expression 4x + y + 8, the coefficients are 4 (for x) and 1 (for y).

Tags

CCSS.6.EE.A.2B

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What is a constant in an algebraic expression?

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A constant is a fixed value that does not change. In the expression 3x^2 + 5y + 11, the constant is 11.

Tags

CCSS.6.EE.A.2B

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How do you write an expression for the total cost of renting a paddleboard?

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The expression is C = 15 + 12h, where C is the total cost and h is the number of hours rented.

Tags

CCSS.HSA-SSE.A.1A

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How do you evaluate an expression when given a value for the variable?

Back

To evaluate an expression, substitute the given value for the variable and perform the arithmetic operations. For example, to evaluate y^2 + 9 when y = 4, substitute 4 for y: 4^2 + 9 = 16 + 9 = 25.

Tags

CCSS.6.EE.A.2C

Front

What does it mean to write an expression using exponents?

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Writing an expression using exponents means to express repeated multiplication in a compact form. For example, 7 * 7 * t * t * t * t can be written as 7^2 * t^4.

Tags

CCSS.6.EE.A.1

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What is the difference between a variable and a constant?

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A variable is a symbol that represents an unknown value and can change, while a constant is a fixed value that does not change.

Tags

CCSS.6.EE.A.2B

Front

What is an algebraic expression?

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An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 3x + 2 is an algebraic expression.

Tags

CCSS.6.EE.A.2B

Front

How do you combine like terms in an expression?

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To combine like terms, add or subtract the coefficients of terms that have the same variable raised to the same power. For example, in 3x + 4x, combine to get 7x.

Tags

CCSS.7.EE.A.1

Front

What is the order of operations in mathematics?

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

Tags

CCSS.7.NS.A.3

Front

What is a term in an algebraic expression?

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A term is a single mathematical expression that can be a number, a variable, or a combination of both multiplied together. For example, in the expression 4x + 5, there are two terms: 4x and 5.

Tags

CCSS.6.EE.A.2B