82 terms

# Mathcounts basics review

###### PLAY
Prime numbers
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
1/2
.5 50%
1/3
.333 33.33%
2/3
.6666 66.66%
1/4
.25 25%
3/4
.75 75%
1/5
.2 20%
2/5
.4 40%
3/5
.6 60%
4/5
.8 80%
1/6
.166 16.6%
5/6
.833 83.3%
1/8
.125 12.5%
3/8
.375 37.5%
5/8
.625 62.5%
7/8
.875 87.5%
1/9
.111 11.1%
1/10
.1 10%
1/11
.0909 9.09%
1/12
0.833 8.33%
1/16
.0625 6.25%
1/20
.05 5%
1/25
.04 4%
1/50
.02 2%
1^2
1
2^2
4
3^2
9
4^2
16
5^2
25
6^2
36
7^2
49
8^2
64
9^2
81
10^2
100
11^2
121
12^2
144
13^2
169
14^2
196
15^2
225
16^2
256
17^2
289
18^2
324
19^2
361
20^2
400
21^2
441
22^2
484
23^2
529
24^2
576
25^2
625
1^3
1
2^3
8
3^3
27
4^3
64
5^3
125
6^3
216
7^3
343
8^3
512
9^3
729
10^3
1000
Square root of 1
1
Square root of 2
1.414
Square root of 3
1.732
Square root of 4
2
Square root of 5
2.236
Square root of 6
2.449
Square root of 7
2.646
Square root of 8
2.828
Square root of 9
3
Square root of 10
3.162
Formula for perimeter of a triangle
p=a+b+c
Formula for perimeter of a square
p=4s
Formula for perimeter of a rectangle
p=2l+2w
Formula for perimeter of a circle (circumference)
c=2(pi)r
c=(pi)d
Volume of a cube
v=s^3
Volume of a rectangular prism
v=lwh
Volume of a cylinder
v=(pi)r^2(h)
Volume of a cone
v=(1/3)(pi)r^2(h)
Volume of a sphere
v=(4/3)(pi)r^3
Volume of a pyramid
v=(1/3)(area of base)h
Distance formula
rate*time
Slope of a line
m=rise/run
distance formula
distance between two points or length of segment with end points (x1, y1) and (x2, y2) D=sq