Topic 7 Review

Front

What is the divisibility rule for 10?

Back

If the number ends in 0, then it has 10 as a factor.

Front

What is the divisibility rule for even numbers?

Back

All even numbers (numbers ending in 0, 2, 4, 6, 8) have 2 as a factor.

Front

Why is the number 1 special?

Back

1 only has one factor and is neither prime nor composite.

Front

What is the only even number that is NOT composite?

Back

2 is the only even number that is NOT composite.

Front

What are the factors of 10?

Back

The factors of 10 are 1, 2, 5, and 10.

Front

What is a prime number?

Back

A prime number is a number greater than 1 that has no positive divisors other than 1 and itself.

Front

What is a composite number?

Back

A composite number is a number greater than 1 that has more than two positive divisors.

Front

What is the divisibility rule for 5?

Back

If the number ends in 0 or 5, then it has 5 as a factor.

Front

What is the divisibility rule for 3?

Back

If the sum of a number's digits is a multiple of 3, then the number is divisible by 3.

Front

What does it mean for a number to be even?

Back

An even number is any integer that is exactly divisible by 2.