Grade 6 Exam Review

a four-sided, two-dimensional figure with opposite sides that are parallel

To find the area, we are calculating the number of units that a two-dimensional shape consists of.

To find the area, we multiply the length times the width.

Area = L x W

A triangle is a shape with three sides.

To find the area of the triangle, multiply the base times height and divide by 2

a four-sided shape with exactly two parallel sides

To find the area of the trapezoid, add the bases, multiply by the height and divide by two.

Area =  $\frac{\left(b1\ +\ b2\right)h}{2}$  

a  figure that is made up of two or more basic shapes

Each of these are composite figures because each of them has more than one shape put together.

Example: Figure L is a triangle and a rectangle.

Dimensions refer to the area or the perimeter

Area = the space inside of a shape

Perimeter = the distance around a shape. Add the sides together.

the amount of space an object takes up

To calculate the volume of a rectangular prism, we must multiply the length times width times height.

OR

B (area of the base) x Height

To calculate the volume of a triangular prism, determine the shape of the base.

Multiply the base x the height and divide by 2

a polyhedron that consists of a polygon as a base with at least three triangular faces that meet at the apex

To find the volume of a pyramid:

Volume =  $\frac{\left(area\ of\ base\right)h}{3}$  

Be sure to check what kind of base the shape has.

the total area of all of the faces of a three-dimensional shape

Formula: (2lw) + (2wh) + (2lh)

Find the area of all faces

Add the faces together.

•Mean: add all the numbers then divide by how many numbers you have.

•Median: Order from smallest to largest. Find the number in the middle. If there are two middle numbers, add them and divide by 2.

•Mode: Which number appears the most?

•Range: Subtract the lowest number from the largest. 

Step 1: Find the mean of the data

Step 2: Subtract the mean from each number in the data (deviations)

Find the mean of the deviations

The lowest number is 6.

The highest number is 13.

The median is 9.

The first/lower quartile is 8.

The third/upper quartile is 11.