Forming Equations

331 students went on a field trip. Six buses were filled and seven students were transported by car. Create an equation to calculate the number of students on each bus.

Ahmed collected boxes to use when relocating. He bought seven boxes more to add to his collection. A week later half of all the boxes were destroyed in a fire. There are now only 22 boxes left. Create an equation to calculate the number of boxes he originally had.

Jill sold a quarter of her comic books and then bought sixteen more. She now has 28. Create an equation to calculate the number of books she originally had.

Subtract y from x.

• y - x

• x - y

• x + y

• x/y

Divide r by t.

• r/t

• t/r

• r - t

• t - r

Sum of a and b.

• a + b

• a + d

• a - b

• b - a

Subtract r from 4t.

• 4t - r

• r - 4t

• 4t + r

• 4t / r

Write an equation for each of these, use 'n' for the unknown number.

Do not include spaces between numbers and the equals sign, use a / for divide.

I think of a number, multiply it by 3 then add 7, the answer is 19.

Write an equation for each of these, use 'n' for the unknown number.

Do not include spaces between numbers and the equals sign, use a / for divide.

Three more than double a number is 15

The local service center advertises that it charges a flat fee of $50 plus $8 per mile to tow a vehicle. Write an equation that represents the total cost (C) of a service for m miles of towing.

• y = 8x + 50

• C = 50m +8

• y = 50x + 8

• C = 8m + 50