Groups of change with totals from 1 to 100 cents using the least amount of coins.

An illustration of a Roman Numeral clock showing 11:50.

An illustration of a Roman Numeral clock showing 2:50.

Illustration of 50 congruent cubes stacked at various heights. A 3-dimensional representation on a 2-dimensional…

An isosceles triangle with angles 50, 65, 65

An isosceles triangle with angles 80, 50, 50

Illustration of a right triangle with legs labeled 150 and 85. This could be used to find the hypotenuse…