1. Adding Rationals (mainly integers)
Hints!
RAP!
Use a number line to model the sum of two integers.
Find the sum.
Use a number line, $ money $ , or the RAP.
Same signs …ADD! Signs opposite … SUBTRACT! (Change doubles!)

2. Evaluate.
12. A scuba diver studying marine life is 4 feet below sea level. From that depth,
the diver descends 72 feet to the ocean floor and then rises 61 feet. The diver rests
there to avoid decompression illness. Where is the diver relative to sea level?
13. Jason got the following scores on his first 9 holes of miniature golfing.
-2, 3, 0, 1, -1, -1, 2, 4, What was his score after the 9th hole?

3. Subtracting Rationals (mainly integers)
Hints!
RAP!
Simplify. Evaluate. 2. 4. 5.
Use a number line, $ money $ , or the RAP.
Same signs …ADD! Signs opposite … SUBTRACT! (Change doubles!)

4. 11. The temperature in Havre, Montana yesterday was –12 degrees.
During a Chinook the temperature will drop 20 more degrees, but then
warm up 50 degrees. What will the temperature be after the Chinook?
12. Your checking account shows an overdraft, or a negative balance.
Your present balance is -$25. You deposit $100, then write a
check for $12. What is your new balance?
13. On its first down, the football team gains 8 yards. On its second down,
it gains 1 yard. On its third down, it loses 5 yards. On its fourth down,
it gains 7 yards. Does the football team gain at least 10 yards?