Math G6

Which list has only prime numbers?

• 2, 3, 4, 5
• 1, 5, 7, 9
• 2, 3, 5, 7
• 2, 4, 6, 8

Which of the following number is even?

• 394683

• 1872546

• 5172359

A number is divisible by 3 if

• last digit of the number is 3.

• he number ends with 3 , 6 or 9.

• sum of all digits of the number is divisible by 3.

What are the factors of 24?

• 2, 12

• 5, 5

• 3, 8

• 4, 6

What is the prime factorization of 40?

• 2 x 20

• 2 x 2 x 10

• 2 x 2 x 2 x 5

• 2 x 2 x 2 x 2 x 5

Which number is divisible by both 2 and 3?

• 144

• 45

• 712

• 345

What are the factors of 18?

• 2, 9

• 3, 6

• 4, 4.5

• 5, 3.6

Which of the following are relatively prime numbers?

• 2 and 6

• 15 and 30

• 35 and 16

• 3 and 5

7 x ( 2 + 3 ) = 14 + ......

• 21

• 20

• 19

• 18

24 + 16

• 16 ( 2 + 1 )

• 8 ( 3 + 2 )

• 2 ( 12 + 6 )

• 4 ( 6 + 12 )