Math Tips Flashcards
0
Q
Odd + odd=
A
Even
Ex. 3+9 = 12
1
Q
Even + Even =
A
Even
Ex. 2+4 = 6
2
Q
Odd + even
A
Odd
Ex. 3 + 4 = 7
3
Q
Even x even
A
Even
4 x 6 = 24
4
Q
Even x odd
A
Even
2 x 3 = 6
5
Q
Odd x odd
A
Odd
3 x 9 = 27
6
Q
First 10 prime numbers
A
2, 3, 5, 7, 11, 13, 17, 19, 23, 29
NOTE: 1 isn’t a prime number
7
Q
The word “is” means
A
=
Ex. 5 is %20 of 25, means 5 = .2 x 25
8
Q
The word “of” means
A
“Multiply”
Ex. 5 is %20 of 25, means 5 = .2 x 25
9
Q
Directly proportional
A
Y = KX
So Y/X = K
10
Q
Inversely proportional
A
Y = K/X
Or
XY = K
