Integer Operations Quiz

A submarine was situated 800 feet below sea level. If it ascends 250 feet, what is its new position relative to sea level?

• 1050 feet below sea level

• 550 feet below sea level

• 250 feet below sea level

• 800 feet below sea level

Answer explanation

After ascending 250 feet, the submarine is now 550 feet below sea level (800 - 250 = 550). Therefore, the correct answer is 550 feet below sea level.

Answer explanation

To evaluate the expression -7 + 12, simply add the numbers together to get 5. Therefore, the correct answer is 5.

Answer explanation

The result of -8 multiplied by 6 is -48. Therefore, the correct answer is -48.

Answer explanation

When -15 is divided by -3, the quotient is 5. A negative divided by a negative is a positive.

Answer explanation

To simplify -4 - (-9), we can rewrite it as -4 + 9, which equals 5. Therefore, the correct answer is 5.

A hiker descends 300 feet from a mountain peak. If the peak is at 1200 feet, what is the hiker's new elevation?

• 1500 feet

• 900 feet

• 600 feet

• 300 feet

Answer explanation

The hiker's new elevation is 900 feet after descending 300 feet from the peak at 1200 feet.

Answer explanation

The product of -3 and -7 is positive because when two negative numbers are multiplied, the result is positive. Therefore, -3 * -7 = 21.

Answer explanation

The result of -24 divided by 6 is -4. Therefore, the correct answer is -4.

Answer explanation

To evaluate the expression -10 + (-5), we add the numbers which gives us -15. Therefore, the correct answer is -15.

Answer explanation

Starting at -5°C and increasing by 12°C results in a new temperature of 7°C. Therefore, the correct answer is 7°C.