7th Grade Math

Preparing for Standardized Tests 617

Preparing for

Standardized Tests

Short-Response Questions: Showing Work

Short-response questions require that you show your work. You may be able to

get partial credit even if your answer is not entirely correct.

A cheerleading mat is rolled up to form a cylinder that measures 6 feet

long and 3.5 feet in diameter.

6 ft

3.5 ft

6 ft

What is the approximate volume, in cubic feet, of the roll? Show your

work or explain in words how to determine the answer.

Work Space

Volume (V) of a cylinder = πr^2 h

radius = 3.5 ÷ 2 or 1.75

V = π(1.75)^2 (6)

V ≈ 57.7

Volume 57.7 cubic feet

Chase’s cell phone is a rectangular prism

3.3 inches high, 1.7 inches long, and 0.8 inch

wide. What is the surface area, in square inches,

of Chase’s phone?

Be sure to keep your

calculations inside the

work space provided.id

yourr

de thee

ddedd.

The formula, steps, and

calculations used to find the

solution are clearly shown.

617_619_C10_STP_895130.indd 617 1/4/10 3:14 PM