Mathematics at Tamaki college

Today I have learnt many things about algebra such as meaning of an expression and also "maths eyes". Here are one of the examples 2a + 3a2 + 4a . It is really easy and mostly all the year 8s got confused. Here are some other stuff that we have learnt.

Expression	Everything together and no equal sign
Variable	Is just the letter
Coefficient	It’s the number just before the letter
Constant	The number all by itself

When variables are the we like to call them like terms

When adding like terms keep the variables the same

2a + 5a = 7a

4c + 5c = 9c

7p - 4p = 3p

Ab + 2ab = 3ab

“Maths eyes” if there is no number is front of the letter than that will always be a one.

E.g ab + 2ab

So if the variable is not the same then just forget about it and add the number.

When do an expression the number must be in alphabetical order