Multiples and Prime Numbers

Prime Number Games
In PrimeShooter you can shoot at numbers using that number's prime numbers. How good of a prime number shooter are you?

Number Cop! Use your first name only to log in. Click on other games and pick Prime Numbers. Then choose your difficulty level. Be prepared to run down some prime numbers!

Determine if numbers are prime or composite in the chart here.

How good are you at determining if a number is prime or composite? Choose a range of numbers and see if you can tell! Please pick a fifth grade range to work with, like 0 - 150.

Find the Least Common Multiple Games
How good are you at determining two number's least common multiple? Click here to find out!

Need a review of finding the LCM? Click here!

Games with Multiples (Basics Review)
Number Cop! Use your first name only to log in. Choose the multiples you would like to play with. Do NOT just pick the easy ones like 2 or 5! See how quickly you can do mental math to figure out multiples of 3, 6, and 9!

Blast some unfriendly ghosts in Ghostblaster! Pick a number (you can even pick numbers larger then 10!) and then see how many mean ghosts you can obliviate!

In Pumpkin Multiples, the mayor of Pumpkinville is dropping pumpkins into the pumpkin patch. Pick a number you'd like to find multiples of, and see how you do!

In Multiple Frenzy, pick the number you'd like to find multiples of (you can go up to multiples of 13 for a real challenge!) and then blast them out of the air as they drop!

Rules of Divisibility!

Ready to see if you are a master at identifying the rules of divisibility for different numbers? Visit VectorKid's website to find out how good you are!

Challenge! (includes multiples of 8) The rule for 8 is that a number is divisible by 8 if the last three digits are divisible by 8.

Make your own divisibility rules quiz here! Remember, you must have the rules for 2, 3, 4, 5, 6, 9, and 10 memorized. Feel free to go above and beyond once you've memorized and can apply those!

Want to know all the divisibility rules? Here's a handy chart that tells you the divisibility rules for 2 to 13!

Division! Division! Division!

Did you forget the steps for doing long division? Don't worry, visit Cool Math's Long Division Lesson! Want an explanation for how to do long division with remainders? Math is Fun has a step by step tutorial for that as well!

Ready for some practice? First, visit the step by step long division tutorial and see if you can solve long division problems with and without remainders.

Grab a sheet of scrap paper and get your brains ready for The Number Monster for Long Division. Pick a skill level and see how far you can go!

Snork is a monster who doesn't know how to do long division. Help her solve problems in Snork's Long Division Game!

Here's a challenge! Given some numbers, try to figure out where they belong to make a true division number sentence. Grab a scrap piece of paper and put your thinking caps on to play SumSense.

Practice: The Basics

Help the monkey cross the swamp by practicing your basic multiplication and division facts in Starship Math's Cross the Swamp. (EASY)

Unsure of basic division facts? Try Mr. Martini's quick division quiz! The computer will score it once you're done so that you can see how you're progressing in mastering your basic facts!