How to write 800+10+4 in standard form

Tom said that the sum of 5/12 and 1/12 in simplest form is 6/12. Is he correct? Explain.

For the equation 5x + 36 = x, which value could be a solution

Rosalinda saved $35 in 5 weeks. Her sister saved $56 in 56 days. Are the rates at which each sister saved equivalent? Explain your reasoning.

Can you simplify - 4X - X =

Oliva has a job as a writer, she writes 2 new sheets of magazines for her job in 3 hours. What is the rate per hour at she writes the sheets of magazines?

Find the percent of the number. 25% of 340

This may be easy but here's a movie mathematics problem for the beginners. There is a population of 50 people watching a halloween movie named "hocus pocus" and another halloween movie named "halloween town" with a population of 70 then the last one

The length of a classroom is 31 feet. What is this measurement in yards and feet. The measurement is how nany yards and how many feet.

When the number is divided by 6 the remainder is five when the number is divided by 7 the remainder is 6 when the number is divided by 9 the remainder is 8 what is the number?

Which of the following is a prime number? A. 27 B. 11 C. 8 D. 4