Math 7 Topic 1 Quiz Review

Daniel earned 50 points in a video game. He lost 40 points, earned 87 points, then lost 30 more points. What is his final score in the video game?

Nick is walking up a hill at 130 3/4 feet above sea level when he kicks a pebble. If the pebble falls to the base of the hill, which is 18.5 feet below sea level, what is the vertical distance that the pebble fell?

Convert 10/33 to a decimal.

Perform the following operation.

-25-16

Convert 7/30 to a decimal.

Perform the following operation.

Masin is scuba diving. He descends 5 feet below sea level. He descends another 13 feet. What is his current position?

Perform the following operation.

Convert 21/40 to a decimal

-45+97

Which of the following expressions will produce a negative result?

RJ has overdrawn his checking account by $27. His bank charged him $15 for an overdraft fee. Then he quickly deposited $100. What is his current balance?

|-98|

9.5 - (-12.8)

Mrs. Flynn recorded a temperature of 62°F this morning for science class. The temperature increased 6 ½°F in the afternoon before decreasing 8.7°F in the evening. What was the evening temperature?

A plastic toy submarine is held 15 centimeters below the water surface in a bath tub. The submarine is let go and rises 15 centimeters. What integer represents the toy submarine’s position with respect to the surface of the water?

Perform the following operation. Simplify the fraction, if necessary.

Perform the following operation. Simplify the fraction, if necessary.

-|64|

The temperature in the late afternoon was −7.5°C. It dropped 5 degrees by early evening and then dropped another 8.5 degrees by midnight. What was the temperature at midnight?

The floor of an elevator in a building is 30 feet above ground level. It travels down to the lower level of the building, where the floor is10 feet below ground level. What distance has the elevator’s floor traveled?

A dolphin is swimming 18 ½ feet below the surface of the ocean. There is a coast guard helicopter 75.5 feet above the surface of the water that is directly above the dolphin. What is the distance between the dolphin and the helicopter?

Perform the following operation. Simplify the fraction, if necessary.

The force of gravity added to the force of thrust is the combined force at work on a model rocket. What is the combined force, in newtons, on the rocket?

-18-(-18)