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 6 : 8 : 10 9 : 12 : 15 5 : 12 : 13 8 : 15 : 17 45:45:90 Longest side: multiply by 2 Shortest side: divide by 2 30:60:90 Longest side is twice the shortest side Middle side is the shortest side times 3 Even Even = Odd Odd = Even Odd =
x + 2xy + y = (x + y) x – 2xy + y = (x – y) x –y
2 2 2 2
2
2
2
2
Even + Even = Odd + Odd = Even + Odd =
= (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 3 1 .7
I = prt D=rt 1 1 1 t1 t 2 t total
p1q1 p2q2 ptotal q1 q2
V L W H
d ( x2 x1 ) 2 ( y 2 y1 ) 2
A=½bh
2 A= s 3 4
SA 2LW 2LH 2WH
V = hr² V=
4 r³ 3
w1t1 wt 2 2 other other
A = r² C = 2r A = bh
S = 180(n – 2)
difference 100 original
x Length 360 Circum
Verbal
5th 22min left 5th 33min left
10th 18 10th 26 18 13
15th 8 15th 11
20th 4 20th 7
25th
Math
23th