Radius & Diameter
Comparing numbers
Sums
Mult/Division
Use your reference sheet
100
If the radius is 12cm,
then the diameter is?
24 cm.
Diameter is equal to radius x 2.
100
-3.1_______-3.2
Use the correct symbol to make the statement TRUE
-3.1>-3.2
on the LHS, the further from zero, the smaller the value.
100
13+13+13
39
100
True or False:
-3 x-3 x-3 =-27
TRUE! Neg xNeg xNeg =Neg
3x3x3=27
100
What is the area of a square with a side length of 2.5?
6.25 sq units
2.5x2.5=6.25
200
If the diameter is 14 in, then the radius is?
7 inches
Radius is half of the diameter.
200
-11______-9
-11<-9
-9 is larger because it is closer to zero
-
200
-13+-13+-13
-39
200
-27/9
-3
-3x9=-27
200
If a rectangle has an area of 120 and a width of 5 what is the length?
24
5x25=120
300
If the diameter is 25 yds, what is the radius?
The radius is 12.5yds
Radius is half of the diameter.
300
-1/3 ______-1/4
-1/3 < -1/4
-1/4 is closer to zero
300
13+(-13)
0
adding opposite numbers =0
300
(-3)(5)(-2)(-1)
(-15)(-2)(-1)
(30)(-1)
-31
300
use your reference sheet
find the area of a circle
d=10
400
The radius is 11.5 cm so what is the diameter?
The diameter is 23 cm.
radius x 2= 23
400
-.05______-.15
-.05>-.15
-.05 is closer to zero
400
-43 +13
-30
400
165/15
11
400
Use your reference sheet:
The base of a triangle is 15 and the height is 12
what is the area
0.5x12x15
6x15
90 sq units
500
A circle has a diameter of 25.5
What is the radius?
12.75 units.
25.5/2
500
-1100_____-1099
-1100<-1099
500
156 + (-50)=
106
500
(-4)(5)(6)(-1)
120
500
use your reference sheet
a square has an area of 100 sq units
what is the side lenght
10 units