If I'm asked to simplify an expression does that mean I shorten it or solve it?

What is 155,016 rounded to the nearest thousand

Use the difference of two squares to find the product of 22 and 18. Enter the correct number in each box. (+) (-) = () 2 - () 2 = 396

Martin flips a coin 64 times. How many times can Martin expect the coin to land on heads?

What is 8 over 32 as a percent? Round to the nearest Hundredth.

Find the quotient. (x 2 - 4xy) : x

One student ate 3/20 of all candies and another 1.2 lb. The second student ate 3/5 of the candies and the remaining 0.3 lb. What weight of candies did they each eat?

A 1/2 gallon of paint covers 1/6 of a wall. How much paint is needed to cover the entire wall? Could u show me how to do this question?

Solve the equation 5x = 7 for x. Give an exact solution as a logarithm, and an approximate solution rounded to the nearest thousandth.

A boy purchased (bought) a party length sandwich 53 in. long he wants to cut into three pieces so that the middle piece is 5 in. longer than the shortest piece and the shortest piece is 9 in. shorter than the longest piece.

6. Which expression is equivalent to the algebraic expression below? A - 5 C. - 12 + 20 D. - 128 - 5