Envisions - Topic 7 - Review

Front

What is a factor?

Back

A factor is a whole number that can be divided evenly into another number. For example, the factors of 10 are 1, 2, 5, and 10.

Front

What is a multiple?

Back

A multiple is the result of multiplying a number by an integer. For example, the multiples of 5 are 5, 10, 15, 20, etc.

Front

How many factors does the number 36 have?

Back

The number 36 has 9 factors: 1, 2, 3, 4, 6, 9, 12, 18, and 36.

Front

What does it mean for a number to be prime?

Back

A prime number is a number greater than 1 that has no positive divisors other than 1 and itself. For example, 5 is prime because it can only be divided by 1 and 5.

Front

What does it mean for a number to be composite?

Back

A composite number is a number greater than 1 that has more than two positive divisors. For example, 4 is composite because it can be divided by 1, 2, and 4.

Front

What is the relationship between factors and arrays?

Back

The number of factors of a number is equal to the number of different arrays that can be formed with that number. For example, 36 can be arranged in 9 different arrays.

Front

Which set shows only multiples of 15?

Back

The set {15, 30, 45, 60} shows only multiples of 15.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

What is the largest factor of any number?

Back

The largest factor of any number is the number itself.

Front

How can you determine if a number is a factor of another number?

Back

To determine if a number is a factor, divide the larger number by the smaller number. If the result is a whole number with no remainder, then it is a factor.