A teacher agreed to teach 9 months for $562.50 and his board. At the end of the term, on account of two months absence caused by sickness, he received only $409.50. What was his board worth per month?

Individual problems from throughout mathematics history, as well as articles that include problem sets for students.

Determine a number having remainders 2, 3, 2 when divided by 3, 5, 7 respectively.

Find the isoceles triangle of smallest area that circumscribes a circle of radius 1.

The authors recount the 'great tale' of Napier's and Burgi's parallel development of logarithms and urge you to use it in class.

In a right triangle, the hypotenuse is 9.434 and the sum of the sides around the right angle is 13. Find the lengths of the sides around the right angle.

Two travelers, starting at the same time from the same point, travel in opposite directions round a circular railway.

Four men already having denari found a purse of denari; each man has a different amount of denari before they found the purse. Find out how much denari each man has.

Discussion of 15th century French manuscript, with translation of its problems, including one with negative solutions

A gentleman has bought a rectangular piece of land whose perimeter is to be 100 rods; and he is to pay 1 dollar for each rod in the length of the land and 3 dollars for each rod in the breath of the land.

A wooden beam is stood vertically against a wall. The length of the beam is 30 units.