PSAT Math
Real numbers - Correct Answers-• Any number that is on a number line.
•Includes decimals, fractions, radicals, integers, and rational/irrational numbers.
Rational numbers - Correct Answers-Numbers that can be written as fractions. • Perfect
squares are rational.
• Non terminating, repeating decimals are rational as well.
Irrational numbers - Correct Answers-• Numbers that can't be written as fractions.
• Non‐perfect squares are irrational. π is irrational.
• Non‐terminating, non‐repeating decimals are irrational.
Natural numbers - Correct Answers-The set of counting numbers starting with 1 and increasing.
Whole numbers - Correct Answers-Start with 0 and increase in value.
Negative numbers - Correct Answers-Start with ‐1 and decrease in value.
0 is neither negative nor positive.
Integers - Correct Answers-All whole numbers and their negatives.
Even integers - Correct Answers-Must be divisible by 2. Even integers can be positive or
negative.
Odd integers - Correct Answers-Not divisible by 2. Odd integers can be positive or negative.
Consecutive integers - Correct Answers-Numbers that follow the other.
Ex: if x is the first integer the next consecutive integer would be x + 1, then x + 2, etc.
Consecutive even integers - Correct Answers-differ by 2. X + 2, next consecutive even integer
would be x + 4.
Real numbers - Correct Answers-• Any number that is on a number line.
•Includes decimals, fractions, radicals, integers, and rational/irrational numbers.
Rational numbers - Correct Answers-Numbers that can be written as fractions. • Perfect
squares are rational.
• Non terminating, repeating decimals are rational as well.
Irrational numbers - Correct Answers-• Numbers that can't be written as fractions.
• Non‐perfect squares are irrational. π is irrational.
• Non‐terminating, non‐repeating decimals are irrational.
Natural numbers - Correct Answers-The set of counting numbers starting with 1 and increasing.
Whole numbers - Correct Answers-Start with 0 and increase in value.
Negative numbers - Correct Answers-Start with ‐1 and decrease in value.
0 is neither negative nor positive.
Integers - Correct Answers-All whole numbers and their negatives.
Even integers - Correct Answers-Must be divisible by 2. Even integers can be positive or
negative.
Odd integers - Correct Answers-Not divisible by 2. Odd integers can be positive or negative.
Consecutive integers - Correct Answers-Numbers that follow the other.
Ex: if x is the first integer the next consecutive integer would be x + 1, then x + 2, etc.
Consecutive even integers - Correct Answers-differ by 2. X + 2, next consecutive even integer
would be x + 4.
