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Example:
-23
8
-8
-23
Example: -2 x 3 =
6
-6
-5
Example: |-2| x 3 =
-6
-5
6
Example: √4 =
2
Example: What is the area of a circle whose diameter is 1 cm?
Given: Diameter(d) = 1cm; So, Radius(r) = Diameter/2 = 1/2 = 0.5cm
Area of a circle: πr2 = π x 0.52 = π x 0.25 = 0.25π sq cm
Given: Diameter(d) = 1cm; So, Radius(r) = Diameter/2 = 1/2 = 0.5cm
Area of a circle: πr2 = π x 0.52 = π x 0.25 = 0.25π sq cm
Example:
40
-2
20
15
-20
Example: Sam got 2 extra points.
-2
+2
1
Example: 23
8
6
4
Example:
23 = _____
6
8
5
Example: The ground floor is represented by 0. If Ned is on the 5th basement, and Susie is 6 floors above his, what floor is Susie on?
9th floor
3rd floor
1st floor
Example:
-4 - 2 =
-6
Example:
-4 + 2 =
-2
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