MCAS 1999, 8th Grade Math, Questions 25-28

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Question #25

Use the spinner to answer question 25.

What is the probability of spinning an odd number on this spinner?

A. 1/2

B. 3/8

C. 1/4

D. 2/5

Question #26

A triangle is a right triangle if the lengths, a, b, and c, of its three sides satisfy the following equation:

a² + b² = c²

Which of the following is a right triangle?

A. a triangle with sides measuring 13, 15, and 19

B. a triangle with sides measuring 17, 25, and 36

C. a triangle with sides measuring 20, 21, and 29

D. a triangle with sides measuring 18, 23, and 41

Question #27

Use the figure below to answer question 27.

The area of each square in the figure is 16 square units. What is the perimeter of the figure?

A. 32 units

B. 16 units

C. 48 units

D. 64 units

Question #28

A large jar holds about 2,000 jelly beans. Ms. Lee emptied bags of jelly beans into the jar until it was filled. There were 5 bags left over. She challenged the class to estimate the number of red jelly beans in the big jar. The students counted the jelly beans in 5 unused bags. This is what they found.

Which number below best estimates the number of red jelly beans in the big jar?

A. 275

B. 225

C. 175

D. 150

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