Math Skills Challenge for Grade 5

What are the prime factors of 12?

• [2, 3]

• 2, 6

• 3, 4

• 1, 12

Factorize the number 18.

• 1, 2, 3, 6, 9, 18

• 1, 3, 5, 7, 8, 12

• 2, 3, 5, 7, 11, 13

• 1, 2, 4, 5, 7, 10

What is the least common multiple (LCM) of 4 and 6?

• 14

• 12

• 10

• 8

Find the greatest common divisor (GCD) of 8 and 12.

• 2

• 6

• 4

• 8

If you have 3 apples and you buy 5 more, how many apples do you have in total?

• 10

• 8

• 6

• 4

List the prime factors of 15.

• 1, 15

• 3, 5

• 2, 7

• 4, 5

Factorize the number 24.

• 2^2 x 6

• 3 x 8

• 4 x 6

• 2^3 x 3

What is the LCM of 5 and 10?

• 5

• 20

• 15

• 10

Calculate the GCD of 14 and 28.

• 28

• 14

• 21

• 7

If a pizza is cut into 8 slices and you eat 3, how many slices are left?

• 3 slices

• 6 slices

• 4 slices

• 5 slices