Arithmetic and Number Theory Quiz

Find the sum: −8+15-8 + 15.

• 5

• 6

• 7

• 8

What is the result of (−12)×(−5)+(−3)×4?

• 36

• 48

• 60

• 51

Simplify: (−24÷6)×(−2).

• 6

• 8

• 10

• 12

Find −100÷5.

• -20

• -25

• -30

• -35

Find the least common multiple (LCM) of 12 and 18.

• 24

• 30

• 36

• 48

Find the greatest common divisor (GCD) of 36 and 48.

• 12

• 18

• 24

• 36

Find the least common multiple (LCM) of 8, 12, and 20.

• 80

• 120

• 160

• 180

Find the greatest common divisor (GCD) of 45 and 75.

• 5

• 10

• 15

• 25

Is 582 divisible by 6?

• Yes

• No

Is 143 divisible by 11?

• Yes

• No