7th grade First Semester Review

Front

What is the formula to find the length of a missing side in a right triangle?

Back

Use the Pythagorean theorem: a^2 + b^2 = c^2, where c is the hypotenuse.

Tags

CCSS.8.G.B.8

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Tags

CCSS.8.G.A.5

Front

If 3 bags of potatoes cost $4.50, how do you find the cost of 1 bag?

Back

Divide the total cost by the number of bags: $4.50 ÷ 3 = $1.50 per bag.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the relationship between corresponding sides of similar triangles?

Back

Corresponding sides of similar triangles are proportional.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Front

What does the equation y = mx + b represent in a linear function?

Back

In this equation, m is the slope and b is the y-intercept.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

How do you calculate the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Use the formula: slope (m) = (y2 - y1) / (x2 - x1).

Tags

CCSS.8.EE.B.5

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Tags

CCSS.6.G.A.1

Front

What is the definition of a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value.

Tags

CCSS.6.EE.A.2B

Front

How do you solve for x in the equation 2x + 3 = 11?

Back

Subtract 3 from both sides: 2x = 8, then divide by 2: x = 4.

Tags

CCSS.7.EE.B.4A

Front

What is the definition of a function?

Back

A function is a relation that assigns exactly one output for each input.

Tags

CCSS.8.F.A.1