Express as a sum:
a-5
m-n

Express as a difference:
7+3
a+5
a+b

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

Carley bought a jacket that was discounted 10% off the original price. the expression below represents the discounted price in dollars, based on x, the original price of the jacket.

Spencer has 1/3 pound of nuts he divides them equally into 4 bags what fraction of a pound of nuts is in each bag