Using prefixes - milli and micro.

Using prefixes (milli) in this case.

Metric Unit conversion - division by 1000. 

Simple unit conversion with metric units. 

Unit conversion between two compound units.

Exchange rates.

Calculations involving Standard form.

Convert numbers between 0 and 1 intro standard form/scientific notation.

Convert numbers greater than 1 into standard form/scientific notation.

Dividing amounts in ratios

Picking a ratio out of a list that is not equivalent to the others.

Convert a fraction into a decimal.

Convert a decimal to a fraction.

Convert a percentage to a fraction.

Put fractions in size order.

This question tests the student's ability to identify equivalent fractions through spotting a fraction which is not equivalent amongst a list of otherwise equivalent fractions. It also tests the students ability to convert mixed numbers into their equivalent improper fractions. It then does the reverse and tests their ability to convert an improper fraction into an equivalent mixed number. 

Several problems involving dividing fractions, with increasingly difficult examples, including mixed numbers and complex fractions. 

Several problems involving the multiplication of fractions, with increasingly difficult examples, including a mixed fraction and a squared fraction. The final part is a word problem. 

Manipulate fractions in order to add and subtract them. The difficulty escalates through the inclusion of a whole integer and a decimal, which both need to be converted into a fraction before the addition/subtraction can take place. 

Manipulate fractions in order to add and subtract them. The difficulty escalates through the inclusion of a whole integer and a decimal, which both need to be converted into a fraction before the addition/subtraction can take place. 

This question tests the student's ability to identify equivalent fractions through spotting a fraction which is not equivalent amongst a list of otherwise equivalent fractions. It also tests the students ability to convert mixed numbers into their equivalent improper fractions. It then does the reverse and tests their ability to convert an improper fraction into an equivalent mixed number. 

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.

Find a percentage of an amount.

Find the original price before a discount by dividing the new price by the percentage discount.

Compound percentage change.

Calculate the percentage increase (as a percentage) given a number and the size of the increase.

State the Upper and lower bound of a distance that has been rounded to either the nearest 10 or 100 miles.

Given a student discount, calculate a discounted price.