Perimeter
What does the word perimeter mean?
The distance all the way around a shape
Simplify: 3x+2x
5x
What is −3+5
2
Convert 1/2 to a decimal and a percentage
0.5 and 50%
How many sides does a hexagon have?
6
Find the perimeter of a rectangle that is 6 cm long and 4 cm wide.
6+4+6+4=20 cm
Solve: x+5=12x
x = 7
What is −7−4
−11
Write 0.75 as a fraction in simplest form.
3/4
What do we call a number that can only be divided by 1 and itself?
Prime number
A triangle has sides 5 cm, 7 cm, and 8 cm. What is its perimeter?
5+7+8=20 cm
Solve: 3x=18
x = 6
A submarine is at –120 m and rises 45 m. What is its new depth?
−120+45 = −75 m
What is 25% of 60?
15
What is the value of π (pi) to two decimal places?
3.14
A square has a perimeter of 36 cm. What is the length of one side?
36÷4=9 cm
2x+4=12
x = 4
(−3)×(−6)
18
2/3 +1/6
5/6
What is the only even prime number?
2
A rectangle has a length twice its width. If the perimeter is 48 cm, find the dimensions.
2L+2W=48,
w = 8 cm l = 16 cm.
Expand: 3(x-2)
3x-6
(−4)2−3×(−2)
16+6 =22
A jumper costs $80 and is on sale for 25% off. What is the sale price?
$60
If a shape has 4 equal sides and 4 right angles, but is not a square, what could it be?
Rectangle