7th Grade Expressions

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7x + 9y

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CCSS.7.EE.A.1

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How do you calculate percent error?

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Percent Error = |(Estimated Value - Actual Value)| / Actual Value * 100%.

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CCSS.6.RP.A.3C

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If Sandra pays $40.25 for 5 hats, what is the cost per hat?

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c = 8.05h, where c is cost and h is the number of hats.

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CCSS.6.EE.C.9

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15.45

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CCSS.7.EE.B.3

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What is the location of the sum 11 + (-5) on a number line?

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5 units left of 11.

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CCSS.7.NS.A.1B

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What is a variable in algebra?

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A symbol used to represent an unknown value, often denoted by letters like x or y.

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CCSS.6.EE.A.2B

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What does it mean to simplify an expression?

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To combine like terms and reduce the expression to its simplest form.

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CCSS.7.EE.A.1

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What is a proportional relationship?

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A relationship where two quantities maintain a constant ratio.

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CCSS.7.RP.A.2A

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How do you find the sum of two integers?

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Add the values together, considering their signs.

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CCSS.7.NS.A.1C

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What is the definition of an expression in mathematics?

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A combination of numbers, variables, and operators without an equality sign.

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CCSS.6.EE.A.2B