Math

Question 1

prime numbers

Answer 1

a number that can be divided evenly by 1 and itself

2, 3, 5, 7, 11, 13…

Question 2

composite number

Answer 2

opposite of a prime number

4, 6, 8, 9, 10, 12…

Question 3

rational numbers

Answer 3

include all decimals, integers, and fractions

Question 4

irrational numbers

Answer 4

cannot be written as fractions or decimals because the number of decimal places is infinite and there is no recurring pattern

pi

Question 5

real numbers

Answer 5

the set of all rational and irrational numbers

Question 6

greatest common factor (factors of 18 and 40)

Answer 6

factors of 18: 1, 2, 3, 6, 9, 18 ;
factors of 40: 1, 2, 4, 5, 8, 10, 20, 40
GCF = 2

Question 7

least common multiple (solve for 4 and 6)

Answer 7

41 = 4, 42 = 8, 43 = 12; 61 = 6, 6*2 = 12

LCM = 12

Question 8

a^-n

Answer 8

1/a^n

Question 9

a^-n

Answer 9

1/a^n

Question 10

perfect squares (there are 10)

Answer 10

11 = 1 ; 22 = 4 ; 3*3 = 9 …

Question 11

PEMDAS

Answer 11

…perform MD left to right

20/4 * 25 = 5 * 25 = 125

Question 12

PEMDAS

Answer 12

…perform MD left to right

20/4 * 25 = 5 * 25 = 125

Question 13

Fractions: finding the common denominator…

Answer 13

find the least common multiple

Question 14

proper vs improper fractions

Answer 14

2/5 vs 5/2