Signs
+ x + =?
A Positive
What is the zero rule?
Anything multiplied by 0 will equal 0
What is (-9) x 7
(-63)
6 / (-2)
6 / (-2)= -3
1 x (1+3) / 2
1 x 4 / 2
4/2
= 2
- x + =?
A negative
What is the rule that involves 1?
4 x 7
28
-27 / 3
-27 / 3= -9
3 - (2 x 5) + 6
3 - 10 + 6
-7 + 6
= -1
+ x - =?
negative
Does it matter what order the numbers are in when it comes to the answer?
No
8 x (-8)
(-64)
81 / (-9)
81 / (-9) = -9
8 x (4+3) -1
8 x 7 -1
56 - 1
= 55
- x - =?
Positive
Is 3x4 + 3x5 the same as 3x (4+5)
Yes
3x4= 12 and 3x5=15
12+15 =27
3 x (4+5) = 3x9
3x9= 27
10 x (-9)
(-90)
-121 / -11
-121 / -11= 11
11 x (10+1) -1
11 x 11 -1
121 -1
= 120
What are the 2 ways an equation will be positive?
+ x + = +
- x - = +
Explain/show what a zero pair is
When you need to add pairs into a "bank" because there you cannot deposit a negative
(-6) x (-7)
42
144 / -6
144/ -6= -24
11 x 11 / (21-10) + 1
11 x 11 / 11 +11
121 /11 + 1
11 + 1 = 12