Number System Flashcards & Problems
Directions: Use the definitions & examples below to create Flash Cards. If you don’t have any index cards, you can
get some from Mr Schneider. On one side should be the term, and on the other side should be the definition.
After you complete the flashcards, use them to complete the Quizlet units at www.quizlet.com. More specific
directions can be found on Mr Schneider’s class website: www.schneiderisawesome.com
Term: Natural Numbers
Definition: Start at 1 and count up.
1, 2, 3, 4, 5, …
Term: Integers
Definition: The positive and negative
numbers, but not fractions.
…, -3, -2, -1, 0, 1, 2, 3, …
Term: Whole Numbers
Definition: Start at 0 and count up.
0, 1, 2, 3, 4, 5, …
Term: Rational Numbers
Definition: The positive and negative
numbers, including fractions
…, -2,
, -1,
, 0, , 1, , 2, …
Term: Irrational Numbers
Term: Distributive Property
Definition: Any number that cannot be Definition: When a number is
represented as a fraction (usually
multiplied by numbers being added
square root numbers)
2(x + 3) = 2(x) + 2(3)
Term: Commutative Property of Addition
Definition: When adding, the order doesn’t
matter
a+b=b+a
Term: Commutative Property of
Multiplication
Definition: When multiplying, the order
doesn’t matter
ab=ba
Term: Additive Identity
Definition: A number that, when you add it,
the sum stays the same
a+0=a
Term: Additive Inverse
Definition: A number that, when added, the
sum is 0. Change the sign.
a + (-a) = 0
Term: Associative Property of Addition
Definition: When adding, you can move the
parenthesis around
a + (b + c) = (a + b) + c
Term: Associative Property of Multiplication
Definition: When multiplying, you can move
the parenthesis around
a  (b  c) = (a  b)  c
Term: Multiplicative Identity
Definition: A number that, when you
multiply, the product stays the same
a1=a
Term: Multiplicative Inverse
Definition: A number that, when multiplied,
the product is 1. Make a fraction.
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Number System Flashcards & Problems
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Natural Number
Whole Number
Integer
Rational Number
Irrational Number
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Natural Number
Whole Number
Integer
Rational Number
Irrational Number
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Whole Number
Integer
Rational Number
Irrational Number
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Whole Number
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Irrational Number
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Natural Number(s):
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Whole Number(s):
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Irrational Number(s):
Irrational Number(s):