7th Grade IAR Review #1

Front

What is the formula to calculate the total cost of car repairs if the labor cost is $50 per hour and parts cost $150?

Back

Total Cost = (Labor Hours * $50) + $150

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Front

How do you combine like terms in the expression 5a + 2b - 3a + 4?

Back

Combine like terms: (5a - 3a) + 2b + 4 = 2a + 2b + 4

Tags

CCSS.7.EE.A.1

Front

What does an open dot represent when graphing inequalities?

Back

An open dot indicates that the value is not included in the solution set, used for < and >.

Tags

CCSS.6.EE.B.8

Front

Simplify the expression –2n + 5(–3 + 3n). What is the result?

Back

The result is 13n - 15.

Tags

CCSS.6.EE.A.3

Front

Solve for x in the equation 3x + 2(4x - 4) = 3.

Back

x = 1.

Tags

CCSS.8.EE.C.7B

Front

What is a variable in algebra?

Back

A symbol (often a letter) that represents an unknown value.

Tags

CCSS.6.EE.A.2B

Front

Define 'like terms' in algebra.

Back

Terms that have the same variable raised to the same power.

Tags

CCSS.6.EE.A.2B

Front

What is the distributive property?

Back

a(b + c) = ab + ac; it allows you to multiply a single term by two or more terms inside a parenthesis.

Tags

CCSS.6.EE.A.3

Front

How do you solve a one-step equation like x + 5 = 10?

Back

Subtract 5 from both sides: x = 10 - 5, so x = 5.

Tags

CCSS.6.EE.B.7

Front

What is the difference between an equation and an inequality?

Back

An equation states that two expressions are equal, while an inequality shows that one expression is greater or less than another.

Tags

CCSS.6.EE.B.8