order of operations
12 x 3 ÷ 9
4
2/9 + 5/9
7/9
-65 + -47
-112
-4 x -6
24
A negative plus a negative is a ( positive or negative )?
Negative
25 - 23 x 3
25 - 8 x 3
25 - 24
1
5/15 + 7/15
12/15 = 4/5
-89 + 75
-14
(-15)/ 3
-5
The product of a negative times a negative is (positive or negative)?
Positive
(40 - 20) x 7 - 3
20 x 7 - 3
140 - 3
137
5/9 - 2/7
35/63 - 18/63
17/63
convert the subtraction problem into an addition problem
-54 - 88
-54 + -88
-43 x -4
In order of operation if you have mutiplication and division, which one do you do first?
Start with the one on the left.
Go left to right.
2 x [(-6 + 4) x 8] - 10
2 x [-2 x 8] - 10
2 x -16 - 10
-32 - 10
-42
6/8 -1/2
12/16 - 8/16
4/16 = 1/4
-75 - 99
-174
432 ÷ -3
-144
What math property is this?
( 2 x 5 ) x 6 = 2 x ( 5 x 6)
Associative Property
1 - [ (5/6 +1/3) x 2]
-1 1/3
3/4 + 2/5
15/20 + 8/20
23/20
1 3/20
45 - (-23)
68
-4 x -6 ÷ -2
-12
Is zero positive or negative?
It's neither. It has no sign.