Adding & Subtracting Integers
The water level is 8 feet below your dock. The tide goes out, and the water level lowers 2 foot. A storm surge comes in, and the water level rises 3 feet. Find the new water level.
-7 feet
4.07 - 22.43
-18.36
Samson bought 3 bags of potatoes which cost $12.40, $34.23 and $24.19. How much did he need to pay?
$70.82
You and your friend play a video game. You have a final score of 20 points, and your friend has a final score of −10 points. By how many points did you win?
30 points
-41.90 + 22
-19.90
Jack lives in Philadelphia and plans to attend his alumni reunion party in Connecticut, which is 190.8 miles away. He drives 105.9 miles and reaches New York City. How many more miles does Jake have to drive to reach his final destination?
84.9 miles
A dolphin is at an elevation of −40 feet. It swims up and jumps out of the water to a height of 10 feet. What is the vertical distance the dolphin travels?
50 feet
117.4 + 8.93
126.33
Drew measures a triangular plate whose sides are 12.4 inches, 9.45 inches and 10.35 inches. What is the perimeter of a triangular plate?
32.2 inches
Jake has $100 in his wallet. He spends $15 at Tastee Sub and $10 at QT. As he is walking home, Jake finds a $20 bill on the ground. Then Brandon comes along and borrows $40 from Jake. That night Jake decides do some chores at home and earns $35. How much does Jake end up with at the end of the day?
$90
900.875 - 136.7844
764.0906
Susan bought a drum set for $595.99 and an electronic organ for $284.97. If she gave the cashier $900, how much change did she receive back?
$19.04
Todd begins to walk down a mountain with an elevation of 80 meters above sea level. He hikes all the way down to the valley (below sea level) with an elevation of –40 meters. What is his change in elevation?
120 meters
-968.18 + (-177.472)
-1,145.652
-94.88 - (-56.1503)
-38.7297
Tania’s mass was 46.9 kg and Lisa's mass was 51.2 kg. Six months later, Tania gained 1.8 kg, but Lisa lost 2.1 kg. Find their new total mass.
97.8 kilograms