8th Grade Review

Front

Is 8.27 rational or irrational?

Back

Rational numbers are numbers that can be expressed as a fraction of two integers. Since 8.27 can be expressed as 827/100, it is a rational number.

Front

Categorize the slope of the line: y = 2x + 3

Back

The slope of the line is positive because the coefficient of x (which is 2) is greater than zero.

Tags

CCSS.8.EE.B.5

Front

How would you write 0.0005 in scientific notation?

Back

0.0005 in scientific notation is 5 x 10^(-4).

Tags

CCSS.8.EE.A.3

Front

Find the slope of the line given two points: (1, 2) and (3, 6)

Back

The slope (m) is calculated as (y2 - y1) / (x2 - x1) = (6 - 2) / (3 - 1) = 4/2 = 2.

Tags

CCSS.8.EE.B.5

Front

Write the following in scientific notation: 65,000,000

Back

65,000,000 in scientific notation is 6.5 x 10^7.

Front

What is the definition of a rational number?

Back

A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b is not zero.

Tags

CCSS.5.NBT.A.2

Front

What is the definition of slope in a linear equation?

Back

The slope of a line is a measure of its steepness, calculated as the change in y divided by the change in x (rise/run).

Tags

CCSS.8.EE.B.5

Front

Convert 0.004 to scientific notation.

Back

0.004 in scientific notation is 4 x 10^(-3).

Front

What is the slope of the line represented by the equation y = -3x + 1?

Back

The slope of the line is -3.

Tags

CCSS.8.EE.B.5

Front

How do you determine if a number is rational?

Back

A number is rational if it can be expressed as a fraction of two integers.

Tags

CCSS.5.NBT.A.2