4th Grade Benchmark # 3 Review

What are factors?

• the numbers in a division problem

• numbers that are multiplied together to get a product

• numbers in an addition problem

• numbers in a subtraction problem

What is a prime number?

• A number that has only two factors, 1 and itself.

• A number that can be divided equally by 1, itself and 2.

• A number that is odd.

• A number that cannot be divided equally by anything.

A prime number....

• Can be divided by many numbers

• Has more than 2 factors

• Can only be divided equally by 1 and itself.

• is every odd number.

What is a composite number?

• A number that is odd

• A number that has only two factors

• A number that can be divided equally by more numbers than just 1 and itself.

• A number greater than 2.

Is the number 20 prime or composite?

• Prime

• Composite

which of these numbers is prime?

• 2

• 4

• 6

• 8

Which number is missing in this list of factors for the number 12?

1, 2, 3, 4, 6

• 5

• 9

• 12

• 0

Rachel's tree house is a square. Each side of the floor is 22 feet. What is the perimeter of Jimmy's tree house?

• 44

• 102

• 88

• 66

A rectangle has a perimeter of 94 inches. Its width is 15 inches. How much longer is the length than the width?

• 64

• 25

• 32

• 17

What is the best way to find the perimeter of a rectangle (that is not a square) if you know its length and width?

________________ the length and the width and then ______________ by 2

• add, multiply

• subtract, divide

• multiply, add

• divide, subtract