Adding Integers
When adding SAME signs, ________ and use that sign.
ADD
Step 1: Change to _____________
Step 2: Change sign of ___________ number
Step 3: Follow the rules for ____________
Addition, Second, Addition
9 9 9 9 3 3 3 9 9
What is the ratio of 3s to 9s?
3:6
(= 1:2)
Reduce 5/10
1/2
62 =
36
When adding DIFFERENT signs, ___________ and use the sign of the _________ number
SUBTRACT, LARGER
7 - (-2) =
9
8 8 7 7 7 7 7 8 8 8 8
What is the ratio of 7s to the total?
5:11
Reduce 14/21
2/3
72 =
49
-3 + -2 =
-5
-7 - (-2) =
-5
What are three ways to show a ratio of seven dogs to three cats?
7 to 3
7:3
7/3
Reduce 300/700
3/7
The square root of 15 is between which two whole numbers?
a) 4 and 5
b) 6 and 7
c) 3 and 4
c) 3 and 4
-3 + 5 =
2
-7 - 2 =
-9
1 2 3 4 5 6 7 8 9
What is the ratio of even to odd numbers?
4:5
Which fraction cannot be reduced?
6/8 14/25 16/24
14/25
a) 5 and 6
b) 6 and 7
c) 7 and 8
a) 5 and 6
3 + (-5) =
-2
-8 - 1 =
-9
If the ratio of Xs to Ys is 8 to 9, how many Xs and Ys are there altogether?
17
Which fraction cannot be reduced?
40/200 50/25 21/31
21/31
*not a square root :)
33 =
27