Numbers

Question 1

Define factor.

Answer 1

A whole number that can be divided evenly into another number.

Question 2

What are multiples of a number?

Answer 2

The result of multiplying that number by integers.

Question 3

True or false: 12 is a multiple of 3.

Answer 3

TRUE

Question 4

Fill in the blank: A prime number has exactly _______ factors.

Answer 4

Two

Question 5

Define prime number.

Answer 5

A natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers.

Question 6

What is the smallest prime number?

Answer 6

2

Question 7

True or false: 9 is a prime number.

Answer 7

FALSE

Question 8

Fill in the blank: The square of 5 is _______.

Answer 8

25

Question 9

Define square root.

Answer 9

A value that, when multiplied by itself, gives the original number.

Question 10

What is the square root of 36?

Answer 10

6

Question 11

True or false: The square root of a negative number is a real number.

Answer 11

FALSE

Question 12

Fill in the blank: The factors of 10 are _______.

Answer 12

1, 2, 5, 10

Question 13

What is the greatest common factor (GCF) of 8 and 12?

Answer 13

4

Question 14

Define least common multiple (LCM).

Answer 14

The smallest multiple that is exactly divisible by two or more numbers.

Question 15

What is the LCM of 4 and 5?

Answer 15

20

Question 16

True or false: All even numbers are composite numbers.

Answer 16

FALSE

Question 17

Fill in the blank: The square of 7 is _______.

Answer 17

49

Question 18

What is the square root of 81?

Answer 18

9

Question 19

Define composite number.

Answer 19

A natural number greater than 1 that is not prime; it has more than two factors.

Question 20

What is the GCF of 15 and 25?

Answer 20

5

Question 21

True or false: 1 is a prime number.

Answer 21

FALSE

Question 22

Fill in the blank: The factors of 30 are _______.

Answer 22

1, 2, 3, 5, 6, 10, 15, 30

Question 23

What is the LCM of 6 and 8?

Answer 23

24

Question 24

Define perfect square.

Answer 24

A number that is the square of an integer.

Question 25

What is the **square** of 12?

Answer 25

144

Question 26

True or false: 25 is a **perfect square**.

Answer 26

TRUE

Question 27

Fill in the blank: The **prime factors** of 18 are _______.

Answer 27

2, 3

Question 28

What is the **square root** of 100?

Answer 28

10

Question 29

Define **multiples of 7**.

Answer 29

The numbers obtained by multiplying 7 by integers: 7, 14, 21, etc.

Question 30

What is the **GCF** of 24 and 36?

Answer 30

12

Question 31

True or false: 2 is the only even **prime number**.

Answer 31

TRUE

Question 32

Fill in the blank: The **factors** of 16 are _______.

Answer 32

1, 2, 4, 8, 16

Question 33

What is the **LCM** of 3 and 7?

Answer 33

21

Question 34

Define **odd number**.

Answer 34

An integer that is not divisible by 2.

Question 35

What is the **square** of 9?

Answer 35

81

Question 36

True or false: 14 is a **prime number**.

Answer 36

FALSE

Question 37

Fill in the blank: The **factors** of 1 are _______.

Answer 37

1