Second Periodical Test in Mathematics IV

These are numbers with more than two factors.

• prime numbers

• composite numbers

• factors

• multiples

Which of the following is a composite number?

• 47

• 43

• 41

• 49

Which of these numbers is a prime number?

• 35

• 48

• 51

• 59

Write 16 as a product of its prime factors.

• 2x2x3

• 2x3x3

• 2x2x2x2x2

• 2x2x2x2

What is the greatest common factor of 12 and 18?

• 3

• 6

• 9

• 12

What is the least common multiple of 8 and 3?

• 48

• 72

• 24

• 3

Which of these fractions is in mixed form?

• 7/4

• 1/5

• 9/5

• 5/8

Which of these fractions is equal to 1?

• 9/8

• 12/12

• 9/17

• 2/5

Which of the following is a proper fraction?

• 7/10

• 15/4

• 6/6

• 10/9

Which fraction names the shaded part of the rectangle?

• 1/2

• 3/4

• 5/8

• 6/4