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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.

Students are shown a normal distribution, and a slider that moves the distribution horizontally. They are asked to move it so that the mean is equal to a particular value.

A normal curve is displayed. Mean and standard deviation can be set by sliders.

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Used in the first compulsory.

Questions testing understanding of the precedence of operators using BIDMAS applied to integers.

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Calculating rates and scaling rates. Drops per mL and drops per minute questions unit rate to equivalent rate.

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Calculate P(A|B) given a Venn diagram.

Calculate P(A|B) given a two way table.

Given a discrete random variable (as a formula) calculate:
E(X), Var, std dev, cumulative distribution and probabilties.