Cheat Sheet
(Make sure to draw your rulers and protractors)
(Also write down ABCD and ABCDE before hand to save time during the test)
3:4:5 45:45:90 30:60:90
6 : 8 : 10 Longest side: multiply by 2 Longest side is twice the shortest
9 : 12 : 15 side
Shortest side: divide by 2
5 : 12 : 13 Middle side is the shortest side
8 : 15 : 17 times 3
2 2
x + 2xy + y = (x + y)
2 Even + Even = Even Even =
2 2 2
Odd + Odd = Odd Odd =
x – 2xy + y = (x – y) Even + Odd = Even Odd =
2 2
x –y = (x – y)(x + y)
An integer is divisible by 2 if its units digit is divisible by 2
An integer is divisible by 3 if the sum of its digits is divisible by 3.
An integer is divisible by 4 if its last two digits form a number divisible by 4.
An integer is divisible by 5 if its units digit is either 0 or 5.
An integer is divisible by 6 if it is divisible by both 2 and 3.
An integer is divisible by 9 if the sum of its digits is divisible by 9.
An integer is divisible by 10 if its units digit is 0.
2 1 .4 p1q1 p2q2 ptotal q1 q2 V L W H
3 1 .7
SA 2LW 2LH 2WH
d ( x2 x1 ) 2 ( y 2 y1 ) 2
I = prt
V = hr²
A=½bh
D=rt
1 1 1 4
2 V= r³
t1 t 2 t total A= s 3 3
4
w1t1 wt
2 2 S = 180(n – 2)
other other A = r²
x Length
difference C = 2r
100 360 Circum
original
A = bh
Verbal 5th 10th 15th 20th 25th
22min left 18 13 8 4
Math 5th 10th 15th 20th 23th
33min left 26 18 11 7