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EMC 3 - Equations & Inequalities
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Essential Math Concepts are a reorganization of the Grade 7 California standards into eight categories. The topics comprise 70% of the CST questions.
Terms in this set (7)
additive inverse
Two numbers are additive inverses of each other if their sum is 0: -4+4=0.
algebraic expression
An expression that is written using one or more variables: 2a+5 or a+b.
equation
A sentence that uses an equals sign to show that two groups are equal: y=3+7.
inequality
A sentence that shows the relationship between quantities that are not equal, using <, >, <, > sings: 6<9.
inverse operation
Operations that undo each other: 20-5=15 and 15+5=20.
multiplicative inverse
The reciprocal of a number: The muliplicative inverse of 2 is 1/2.
variable
A letter used to represent one or more numbers: in 5a and 2y=8; a and y are variables.
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