Math 8 Fall Exam Review Part 1

Name: ______Date: ______Pd: _____ Math 8 – Fall Exam Review Part 1

1 The average distance from Earth to the sun is about 9.3 x 107 miles. The average distance from Mars to the sun is about 1.4 x 108 miles. When both planets are at their average distance from the sun, how much farther is Mars from the sun than Earth?

A 79,000,000 mi

B 47,000,000 mi

C 107,000,000 mi

D 233,000,000 mi

2 Trapezoid STUV was dilated and is similar to trapezoid NOPQ.

What is the scale factor that was used to dilate STUV to create NOPQ?

3 Triangle ABC is shown on the coordinate grid below. Name: ______Date: ______Pd: _____

Triangle ABC is dilated with the origin as the center of the dilation. Which ordered pairs could represent the image of ABC after the dilation by a scale factor of 0.5?

A A’ (0.5, 0.5) B’ (0.5, 4.5) C’ (4.5, 1.5)

B A’ (-0.5, -0.5) B’ (-0.5, -2.5) C’ (-2.5, -1)

C A’ (1,1) B’ (1,5) C’ (5,2)

D A’ (0.5, 0.5) B’ (0.5, 2.5) C’ (2.5, 1)

4 Triangle KLM and K’L’M’ are shown on the coordinate plane. Which algebraic representation shows how to find the coordinates of triangle K’L’M’? Name: ______Date: ______Pd: _____

D Name: ______Date: ______Pd: _____

7 Triangle ABC and triangle DEC are shown in the figure below.

Find the length of . ______Name: ______Date: ______Pd: _____

8 The area of a square is 34 square feet. To the nearest tenth of a foot, what is the length of one side of the square?

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9 Order this set of numbers from least to greatest.

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10 The Statue of Liberty weighs 450,000 pounds. The Tomb of the Unknown Soldier weighs 158,000 pounds. What is the sum of their weights in scientific notation?

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11 Two rectangles are similar. The length and width of the first rectangle is 8 meters by 6 meters. The second rectangle is similar by a scale factor of 2.5. What are the dimensions of the second rectangle?

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12 What is the perimeter of the second rectangle?

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