Probability tree diagrams are just a picture.. .. that show all the possible outcomes from a series of events. They can be quite useful as probability needs some careful thought. Watch the video and download the quick test - good luck! This video deals with a GCSE question: There are 3 strawberry yoghurts and 4 peach yoghurts in a fridge. Kate takes a yoghurt at random … [Read more...]
How to solve linear equations with video examples
How to solve linear equations .. some of them you'll solve without really thinking about! Suppose you bought a CD for £8 and then two books at the same price. The total cost is £25 and, with a little bit of arithmetic, you might work out the price of each book is £8.50. Mathematicians like to call these "linear equations" and they look something like: 2B + 8 = 25 (where 'B' … [Read more...]
How to work with arithmetic sequences
This video deals with how to work with arithmetic sequences with a 'common difference.' This is where the same number is added, or subtracted, each time. For instance the sequence 12, 16, 20, 24, 28 .... has a common difference of add 4 ...... or 16, 8, 0, -8, -16 has a common difference of subtract 8. How to work out arithmetic sequences and value of nth term. GCSE grade C … [Read more...]
How to work out the prime factors of a number
Did you know that any number is either a prime number; or can be made by multiplying its unique prime factors together? So: [table id=4 /] This is called 'the fundamental theory of arithmetic' and prime factors are very important in lots of different applications. The most well known is called RSA encryption, named after the 3 creators, Rivest, Shamir, and Adelman. They … [Read more...]
Numeracy skills – how to work out percentages
Good arithmetic is the foundation of numeracy skills and learning how to work out percentages is an important foundational skill. Learn these, practice them and always keep to the same methods! There are 6 main numeracy skills that will help with your maths. Click here to read more. Click here to visit addition skills , subtraction skills , division skills , fraction skills, … [Read more...]