Study Guide - Factors, Multiples, Number Puzzles
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Composite Number
A whole number that has
more than two factors
Prime Number
A number that is
only divisible by itself and 1
Square Number
Any # of tiles that can make a square
Factor
One of the numbers that are being multiplied to equal a product
Multiple
The numbers you say when skip counting by a certain number
How do you know if a number is divisible by 2?
If it is an
EVEN
number
How do you know if a number is divisible by 5?
The number
has to end with a 0 or a 5
.
How do you know if a number is divisible by 10?
The number has to end in a zero.
How do you know if a number is divisible by 3?
The
sum of its digits
is divisible by 3.
123
1 + 2 + 3 = 6
6 is divisible by 3.
How do you know if a number is divisible by 6?
If the number is
divisible
by 2 AND by 3
!
126
126 is an even number (
is divisible by 2
)
1 + 2 + 6 = 9 (
is divisible by 3
)
Card Set Information
Author:
android
ID:
42253
Filename:
Study Guide - Factors, Multiples, Number Puzzles
Updated:
2010-10-14 23:54:44
Tags:
5th grade math
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