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Rules
Prime
Composite
Mixed Review
Large Numbers
100

What is the divisibility rule for 2?

A number is divisible by 2 if it is even (ends in 0,2,4,6,8).

100

What is a prime number? 

A number only divisible by one and itself.

100
Of the following numbers; 34, 35, and 36, which is divisible by 6?
36
100
Is the number 11 prime or composite?
prime
100
Is 3,456 divisible by 3? Why?
Yes , because the digits add up to 18 which is divisible by 3.
200
What is the divisibity rule for 5?
A number is divisible by 5 if it ends in 0 or 5.
200

Give an example of a prime number.

Examples will vary.

2, 3, 5, 7, 11, 13, 17, 19 etc.

200
Is the number 891 divisible by 9?
yes
200
Which is greater 45.098 or 45.089?
45.098
200
Which of the following numbers; 2, 3, 5, 6, 9, or 10 divides the number, 123,456?
2, 3, and 6
300
What is the divisiblity rule for 6?
A number is divisible by 6 if it is also divisible by 2 and 3.
300

Is one prime?

No, it is considered a unit and not prime nor composite.

300
Of the following numbers; 435, 450, and 499, which is divisible by 6 and 9?
450
300

How much would you have to add to the number 201 to make it divisible by 5?

4

300
Which of the following numbers; 2,3,5,6,9 or 10 divides the number 5,095,890
2, 3, 5, 6, 9, 10
400
What is the divisibility rule for 9?
A number is divisible by 9 if the sum of its digits is divisible by 9.
400
How much would you have to subtract from the number 849 to make it divisible by 2, 3, and 5.
9
400

List the factors of 48.

1, 2, 3, 4, 6, 8, 12, 16, 24, 48

400
What is the greatest common factor of 35 and 84?
7
400
What is the Least common multiple for 2,3,5,6,9, and 10?
90
500
What is the divisibility rule for 10?
A number is divisible by 10 if it ends with a 0.
500

Is 3612 a prime number? Explain how you know. (Full explanation for full points).

It is not prime because it is divisible by 2, 3, 4, and 6.

500
How much would you have to add to the number 57 in order for it to be divisible by 6, 9, and 10?
33
500
What is the next number in this pattern? 1,4,9,16,25,36,__
49
500
Is the number 678,929,776,682,820 divisible by 5? Why?
Yes, it ends with a 0.