A demo of how custom marking algorithms can be used to replace the built-in marking methods.

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This question demonstrates a few ways of interacting with a Venn diagram drawn using JSXGraph.

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Given the exchange rate between two currencies, calculate how much of one currency you will get for $x$ amount of the other

Given the exchange rate between two currencies and the bank's commission rate, calculate how much of one currency you will get for $x$ amount of the other

Given the ratio of copper to zinc in brass, calculate how much more copper than zinc is used to create a given amount of brass.

Used for chemistry/materials

Given the ratio of male to female gym members, calculate how many more women than men use the gym

Calculating the nutritional values of cereal as percentages of servings and RDAs

Calculating the revenue distribution of two phone providers for different countries in Europe

Calculating a salesperson's income based on years of service and commission from sales

Given x and y, calculate (x-y) as a percentage of y.  Chemistry context.

Calculating the original amount when told that $p\%$ is $x$. The value given can be non-integer.

Calculating the original amount when told that $p\%$ is $x$. The value given and the original values are both integers.

Given the number of international students enrolled on a course of $n$ students, calculate the percentage of 'home' students.

Calculate one number as percentage of another.

Writing one number as a percentage of another.

Quiz to test students on partial fractions.