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10 Cards in this Set
 Front
 Back
1 is not a prime number because it has only __ factor.

1


Sometimes the way we answer a division word problem with a remainder depends on the wording of the problem. In some cases we have to __________ the final answer up, and in other cases we have to drop off the remainder.

round


Is 91 prime?

no...7x13=91


__ is the only even prime number.

2


Is 51 prime?

no...5+1=6, so 51 is divisible by 3...3x17=51


A __________ number has exactly two factors, 1 and the number itself.

prime


Write 84 as a product of primes.

84/2...42/2...21/3...7
2x2x3x7 

We say that 6 is a ____________ number because it can be composed by multiplying two numbers other than 1 and 6 together.

composite


Write 12 as a product of prime numbers.

2x2x3


Is 87 a prime number?

no...8+7=15, so 87 is divisible by 3...3x29=87
