Gemdas problem solving

Emily is a diver. Today she descended to a depth of 40 feet below sea level. Then she swam up 10 feet and descended another 4 feet. How far below sea level is Emily now?

• -34 feet
• -54 feet
• 54 feet
• -26 feet

The high temperature Monday was 4 degrees. The low temperature was -7 degrees. What is the difference between the high and low temperatures?

• 3 degrees
• 12 degrees
• 11 degrees
• 10 degrees

Ty entered the elevator on the 10th floor. He rode up 3 floors, down 7 floors, up 2 floors, down 5 floors and up 6 floors, where he got off. On what floor did Ty get off the elevator?

• 6th floor
• 7th floor
• 8th floor
• 9th floor

A submarine is 150 below sea level while an airplane is 375 above sea level. What is the difference between the height of the submarine and the airplane?

• -525

• 525

• 325

• -325

Harvey and Dona want to test the range of the walkie-talkies they have. They start at Harvey's house and walk away from each other. Harvey goes to the store 4 miles away to the East and Dona goes to the park 5 miles West. How far apart are the walkie-talkies?

• 9 miles
• 1 mile
• -9 miles
• -1 mile

When a submarine starts at sea level, goes down 250 feet, rises 80 feet, and descends another 18 feet, how would this be shown mathematically?

• 250 + 80 + (-18)
• -250 + 80 - (- 18)
• 250 + -( 80) + (- 18)
• -250 + 80 + (-18)

If you run up 14 steps, fall down 12, and crawl up 22 more steps, how many steps are you from where you began?

• +48
• +24
• -20
• +22

Which expression represents a temperature starting in the morning at 12 degrees below zero rising 14 degrees at noon, and falling 5 degrees that night?

• 12 + 14 + (-5)
• - 12 + 14 + 5
•  12 + (-14) + (-5)
• - 12 + 14 + (-5)

You were given $25 for your birthday and earned another $82 shoveling snow; however, you owed your sister $115 for the sneakers you wanted. What expression represents this?

• 0 + 25 + 82 + 115
• 0 + 25 + 82 + (-115)
• 0 - 25 + 82 + 11

The first play of a football game resulted in a loss of 12 yards.  Then a penalty resulted in another loss of 5 yards.  What is the total loss or gain?

• a gain of 7 yards
• a loss of 7 yards
• a gain of 17 yards 
• a loss of 17 yards