Adding/Subtracting Integers
Solve (don't forget rules for adding integers!)
-15 + (-23)
-38
-5 x -5
25
1/3 + 1/3
2/3
- 1/3 x -1/3
1/9
Simplify the fraction DIVIDE BY THE GCF!
10/40
1/4
Solve
17 + (-3)
14
-3 x 2
-6
2/5 + 1/10 DO not forget to get COMMON DENOMINATORS!
2/5 = 4/10 + 1/10
5/10 or 1/2
- 3 x 10/3
- 30/3 or -10
Simplify the fraction
15/30
1/2
Solve (don't forget rules for subtracting integers..KCC!)
23 - (-3)
26
12/ -4
-3
9/12 - 1/12
8/12 or 2/3
-1/2 ÷ 20/5 KCF!
-1/2 ÷ 5/20 = -5/20 or -1/8
Convert the fraction to a decimal! (Divide the bottom into the top! Add a decimal and a 0)
8/10
0.8
Solve (KCC!)
-20 - 5
-25
5
2/3 + (-4/5) DONT FORGET COMMON DENOMINATORS! and ADDITION rules
2/3 = 10/15 -4/5=-12/15 diff signs SUBTRACT
-12/15 - 10/15 = 2/15
-1/2 ÷ 10/3 KCF!
-1/2 x 3/10 = -3/20
Convert the fraction to a decimal! (Divide the bottom into the top! Add a decimal and a 0)
4/9
0.4 repeating
Bob is 10 feet below sea level. Sue is 12 feel below sea level. What is the DIFFERENCE in their elevations?
-10 - (-12)
-10 + 12
2 feet apart
It is -3 in Boston. In 3 times colder the next day. How cold is it in Boston the next day?
-3 x 3
-9 degrees
-11/6 - (- 2/3) COMMON Ds! Subtraction rules! KCC
-11/6 2/3=-4/6
-11/6 + 4/6
-7/6 or -1 1/6
Sarah drove 1/4 miles. Tom drove 1/3 times the distance of Sarah. How far did Tom drive?
1/4 x 1/3
1/12
Convert the fraction to a decimal! (Divide the bottom into the top! Add a decimal and a 0)
7/9
0.7 repeating