Math riddles with simple answers

Divide 110 into two parts so that one will be 150 percent of the other. What are the 2 numbers?

There is a word and six letters it contains. Take one away and twelve is what remains. What word is it?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

I know a number which is spelled in an alphabetical order. Do you?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So I can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits.

How do you make the number 7 an even number without addition, subtraction, multiplication, or division?

I am an odd number; take away a letter and I become even. What number am I?

What is the largest number you can write with just 3 digits?

As I was going to the mall I met a man with seven wives. Each wive held two bags, each bag held a mother cat, each mother cat had six babies, How many people were going to the mall?