Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

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

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?