4th Grade Bridges Unit 1 Review

Front

What are two numbers that are factors of 21?

Back

3 and 7

Front

What is a composite number?

Back

A composite number is a positive integer that has at least one positive divisor other than one or itself.

Front

List two multiples of 7.

Back

7 and 14

Front

List two multiples of 5.

Back

5 and 10

Front

What is the smallest composite number?

Back

4

Front

What is the definition of a multiple?

Back

A multiple of a number is the product of that number and an integer.

Front

What is the greatest common factor (GCF) of 9 and 21?

Back

3

Front

What is the least common multiple (LCM) of 5 and 7?

Back

35

Front

What is the difference between prime and composite numbers?

Back

Prime numbers have exactly two distinct positive divisors (1 and itself), while composite numbers have more than two.

Front

What is the definition of a factor?

Back

A factor is a number that divides another number without leaving a remainder.