Why do we use algebra?
Algebra is a very good way of generalising a particular scenario. For example, if you get a weekly allowance of £5 for leisure you can make an equation to calculate the amount of money you can save up in n weeks, n being a whole number which signifies the amount of weeks. The equation would be x=5n, x being the total money you would earn in 5 weeks (make sure you put the £ sign in your answer!). We can then use algebra to express more complex scenarios.
AR
Related Maths 11 Plus answers
All answers ▸At the performances last month, a total of seven-hundred and forty-four thousand, eight hundred and one drinks were sold at the theatre's restaurant bar. The manager wants to know how many drinks were sold, rounded to the nearest thousand drinks.
How do you solve the simultaneous equation, 7x – 20 = 3x + 4?
Katie, Jackie and Charlie bake cookies. Katie has baked 8 more cookies than Charlie. Jackie has baked 5 more cookies than Katie. Altogether they have baked 72 cookies. How many cookies did Jackie bake?
A drawer contains ten identical yellow socks, eight identical blue socks and four identical pink socks. Amrita picks socks from from the drawer without looking. What is the smallest number of socks she must pick to be sure that she has at least two pairs