7th Grade Benchmark 2 Practice

A machine operator earns $20 per hour plus a weekly bonus. The expression $20h + 160$ represents the weekly earnings the machine operator earns working $h$ hours. Which expression also represents the weekly earnings the machine operator earns working $h$ hours?

• 20(h + 8)

• 20(h + 18)

• 20(h + 140)

• 20(h + 160)

A student uses mental math to simplify the expression -9(-3 - 8) + (-198). What is the best estimate of the value of the expression?

• 300

• 100

• −100

• −300

Which two situations result in a solution of 0?

• A babysitter earns $40 on Saturday morning. On Sunday morning, the babysitter spends $40 on a video game. How much of the earnings does the babysitter have left?

• A marching band marches 7 blocks north to Main Street. The marching band then marches 7 blocks east to a park. How far is the marching band from the starting location?

• A submarine dives to a depth of 45 meters to explore the ocean floor. Later in the day, the submarine rises 45 meters to the surface of the water. What is the vertical distance between the ocean floor and the surface of the water?

• On Monday night, the temperature outside is −9°F. The next morning, the temperature outside is 9°F. How much does the temperature change from Monday night to Tuesday morning?

• On Tuesday, a teacher collects 9 pencils left on the school desks by students. On Wednesday, the teacher gives out 9 pencils to students. How many pencils does the teacher have left?

What is 9/2 written as a decimal?

• 1.8

• 4.1

• 4.5

• 9.2

The total number of miles biked, y, in, x, days can be represented by the equation y = 31x. What is the constant of proportionality of the equation?

• 7.75

• 15.50

• 31

• 62

Which expression is equivalent to -28.7 - 94.5?

• -28.7 + (-94.5)

• -28.7 + 94.5

• 28.7 + (-94.5)

• 28.7 + 94.5

Which term describes 7/3?

• whole number

• rational number

• negative number

• integer

Angle P and angle Q are complementary. If the measure of angle P is 29°, and the measure of angle Q is (2x + 21)°, what is the measure of angle Q?

• 4°

• 20°

• 29°

• 61°

Which two equations are correct?

• 3/4 - 1/2 = 3/8

• -3/4 - 1/2 = 3/8

• -3/4 - 1/2 = -3/8

• 3/4 - 1/2 = 3/8

• 3/4 - 1/2 = -3/8

What is the value of 1 and 1/4 - 4 and 3/4?

• -6

• -3 1/2

• 3 1/2

• 6