Numbers Flashcards
(21 cards)
What is any number (except imaginary numbers) that can be located on a number line?
Real Number
What are numbers that cannot be written as a fraction?
Irrational Numbers
What are non-repeating infinite decimals?
Irrational Numbers (3.14159…, √2)
What are numbers that can be written as a fraction?
Rational Numbers
Is 0.5 a rational number?
Yes, 0,5 can be written as 1/2.
Is 0.25 a rational number?
Yes, 0.25 can be written as 1/4.
Is 2 a rational number?
Yes, 2 can be written as 2/1.
Is -5 a rational number?
Yes, -5 can be written as -5/1.
Is 0.66666….. a rational number?
Yes, 0.66666…. can be written as 2/3.
What are positive, negative or zero numbers that can be written as a decimal?
Integers (-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5)
What are whole numbers?
0, 1, 2, 3, 4, 5, …….
What are natural numbers?
1, 2, 3, 4, 5, 6, …….
What is a whole number (other than 0 and 1) that is divisible by only the number 1 and itself?
Prime number (2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, ….)
What is a number with no decimal or fractional part, from the set of negative and positive numbers, including zero?
An integer
Identify the integers below.
√8, 12.0, 14/2, −√15, √9, −√9, 37, −2/3, √36, −3.2, −16
12.0=12, 14/2=7, √9=3, −√9=−3, 37, √36=6
Answer:
12.0, 14/2, √9, −√9, 37, √36
Identify the rational numbers below.
√49, −1.3, 11, 9/2, √35, −17, −√51, 24, −3/4, √12, 0.8
Rational numbers can be written as a fraction.
These numbers can be written as a fraction:
√49=7, -1.3=-13/10, 11=11, 9/2, −17=−17/1, 24=24/1, −3/4, 0.8=8/10
Answer:
√49, −1.3, 11, 9/2, −17, 24, −3/4, 0.8
What is a positive number, negative number, or 0?
An integer
What is the absolute value of |3|?
3
What is the absolute value of |5|?
5
What is the absolute value of |-2|?
2
What is the absolute value of |-7|?
7
