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Divisibility Rules
Prime Numbers
adding and subtracting fractions with like denominators
Vocabulary
Adding and subtracting with unlike denominators
100
divisible by 5
What is the last digit of the number 0 or 5?
100
2
What is prime
100
2/4 + 3/4
What is 5/4
100
a number that names a part of a whole or a part of a group
What is fraction
100
1/3 + 2/6
What is 4/6
200
Rule 3
What is the sum of the digits of the number that is divisible by 3
200
13
What is prime
200
1/3 + 3/3
What is 4/3
200
the top number in a fraction; how many equal parts are being considered
What is numerator
200
5/9 + 5/12
What is 35/36
300
2 will go into it
What is if the even number?
300
16
What is composite
300
2/8 +3/8
What is 5/8
300
the bottom number in a fraction; the total number of equal parts
What is denominator
300
1/2 - 1/8
What is 3/8
400
it will divide by 9
What if the sum of the digit is divisible by 9?
400
86
What is composite
400
1/17 + 12/17
What is 13/17
400
the product of a given number and any whole number
What is multiple
400
1/3 + 4/5
What is 17/15
500
6 will go into that number
What if the number is divisible by 2 and 3?
500
1
What is neither prime nor composite
500
15/48 +25/48
What is 40/48
500
a number composed of a whole number and a fraction
What is mixed number
500
1 1/2 + 2 1/4
What is 3 3/4