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The Number System
Math Vocabulary
Rational Numbers
Irrational Numbers
100
A natural number is
What is counting numbers, i.e. 1,2,3,4...
100
______ is repeated addition.
What is Multiplication
100
What two types of decimals can be rational numbers.
What is terminating, repeating decimals.
100
Name the two ways irrational number may be expressed.
What is square roots, decimals
200
Name three integers
What is ...-1, -2, -3, 0, 1, 2, 3...
200
The name for a whole number that can be positive, negative, or zero.
What is an integer.
200
A rational number is any number that can be written as ____.
What is a over b, a/b.
200
Which of the following is an irrational number: .121212121212... .456661455561... .456745674567...
What is .456661455561...
300
Name the five sub sets of numbers with in the real numbers set.
What is natural numbers, whole numbers, integers, rational numbers, irrational numbers.
300
This type of decimal will continue to infinity, giving the same pattern.
What is a repeating decimal.
300
Order the following numbers from least to greatest. √26 4.87 15/3
What is 4.87, 15/3, √26
300
Which of the following is an irrational number: √49 √144 √62
What is √62
400
3.12703182091809... falls into what set of numbers?
What is irrational numbers, real numbers.
400
An irrational number is any number that can not be written in what form?
What is a over be, a/b
400
9/8 is a __________ decimal.
What is terminating decimal, 1.125.
400
Name the one type of square root, and two types of decimals that are NOT considered irrational.
What is perfect square, terminating and repeating decimal.
500
√144 falls into what set(s) of numbers?
What is natural numbers, whole numbers, integers, rational numbers and real numbers.
500
A real number can be what type(s) of numbers?
What is natural numbers, whole numbers, integers, rational numbers, irrational numbers
500
85/15 is a __________ decimal.
What is repeating decimal, 5.6...
500
Explain why PI (π) is an irrational number.
What is PI has a decimal expansion that repeats infinitely with no pattern.