Integers
4 + 5 = ?
9
1/5 + 3/5 = ?
4/5
1.1 + 3.4 = ?
4.5
When BOTH of the signs are positive do we add or subtract?
-1 + 6 = ?
5
-1 + 7 = ?
6
-1/9 + 2/9 = ?
1/9
-5.3
When BOTH signs are negative do we add or subtract?
Add
1.3 + (-8.4) = ?
-7.1
8 + (-3) = ?
5
Double Jeopardy!!
1/4 + 1/8 = ?
3/8
-7.8 + (-1.3) = ?
-9.1
When the signs are different do we add or subtract?
-1/5 + 3/5 = ?
2/5
-9 + (-2) = ?
-11
-5/6 + (-5/6) = ?
-10/6 or -5/3
115.8 + 23.1 = ?
138.9
When the signs are different how do we find the sign for our answer?
We take the sign on the GREATER value
3/8 + 3/4 = ?
9/8
-10 + (-15) = ?
-25
-7/8 + 1/8 = ?
-6/8 or -3/4
-14.1 + 14 = ?
-0.1 or -.1
What do we have to have before we can add or subtract fractions?
Common/same denominators
Double Jeopardy!!!
-100.5 + (-45.3) = ?
-145.8