Divisibility rules
Divisibility rule of number 2
Every even number
Opposite number to -24
24
What is the name of the . in the decimal number?
Decimal point
Perimeter is around the shape and area is the space filling the shape
x= 2+4
x=6
Divisivility rule of 5
Has to have 0 or 5 at the end
|91|
91
0.23 + 2.44
2.67
Area and perimeter of square: a= 3cm
P: 12cm
A: 9cm2
x - 2 = 5
x = 7
Divisibility rule of 7
4 - 7
-3
3.04 - 1. 32
1.72
Area and perimeter of rectangle: a=4cm, b=5cm
P: 18cm
A: 20cm2
3x - 5 = 10
x = 5
Divisibility rule of 3
Number must be divisible by 3 after adding all the numbers together
-3 x 5
-15
1.09 x 2.4
2.616
Area and perimeter of triangle: a=5cm, b=2cm, c=6cm, h=4cm
P: 13cm
A: 10cm2
4x + 5 = 13
x = 2
Divisibility rule of 8
Last 3 digits must be divisible by 8
4 x (2 - 10)
4.84 / 0.4
12.1
Area and perimeter of circle: r=4cm
P: 25.12cm
A:50.24cm2
2x + 4 = x + 14
x = 10