Paper 1 Project Maths Essential Revision Notes
Table of Contents
First let’s take a look at some simple conversions.
Express 45 centimetres as a fraction of 15 metres and write your answer in its simplest form.
Express everything in centimetres
Given that the speed of sound in air is 330 metres per second, express this speed in km/hr
Change metres to kilometres and then seconds to hours
Express 320 grams as a fraction of 8kg
Firstly it’s important to remember in what order we multiply, add, subtract, etc…
The order is
2. Exponents ( Roots and Powers)
3. Multiply or Divide
4. Add or subtract
Some people like to remember the word BEMDAS to help remember the order
(Brackets Exponents Multiply Divide Add Subtract)
When rounding correct to the nearest whole number, we pay attention to the first decimal place. If it is 5 or greater we round it up to the nearest whole number. If it is less than 5 we round it down to the nearest whole number.
Look at the first decimal place
6.8 8 is greater than 5. Round up to 7.0
9.2 2 is less than 5. Round down to 9.0
5.5 If 5 is in the first decimal place we round up. Round up to 6.0
When rounding correct to one decimal place. We pay attention to the second decimal place
7.72 2 is less than 5. Round down to 7.70
16.89 9 is greater than 5. Round up to ...