Math 8 Fall Review

Front

Is -8.5 an integer?

Back

No, -8.5 is not an integer because integers are whole numbers that can be positive, negative, or zero, but do not include fractions or decimals.

Front

Solve for x: 4(x - 3) = 20

Back

x = 8. To solve, first divide both sides by 4 to get x - 3 = 5, then add 3 to both sides.

Front

What is the formula for the volume of a cylinder?

Back

The volume V of a cylinder is given by the formula V = πr²h, where r is the radius and h is the height.

Front

Calculate the volume of a cylinder with radius 5 cm and height 10 cm.

Back

The volume is 785 cm³. Using the formula V = π(5)²(10) = 250π ≈ 785 cm³.

Front

Convert 25,600,000 to scientific notation.

Back

2.56 x 10^7. To convert, move the decimal point 7 places to the left.

Front

Solve for m: 5m + 9 = -2m + 30

Back

m = 3. Combine like terms to isolate m.

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but does not include fractions or decimals.

Front

What is scientific notation?

Back

Scientific notation is a way of expressing numbers as a product of a number between 1 and 10 and a power of 10.

Front

What is the value of π (pi) approximately?

Back

π is approximately 3.14.

Front

What is the formula for the area of a circle?

Back

The area A of a circle is given by the formula A = πr², where r is the radius.