# Math 10 Week 18

The top 5 things that I find important for math 10.

1. BEDMAS

it stands for: Brackets, Exponents, Division, Multiplication, Addition, Subtraction.

It is essential to know for when attempting any question because it is the order of how to solve something.

2: the exponent rule

exponents are weird, and have a different way of being solved.

ex: 5 to the power of 4 times 5 to the power of 9. You would think that it would equal 5 to the power of 36 but it is not. when exponents are multiplied or divided, it is like addition or subtraction. only when there are exponents on the of brackets, then you can multiply or divide: (5 to the power of 7) to the power of 4 = 5 to the power of 28. It is handy to know this so you don’t go making mistakes with exponents

3: Pythagoras theorem

this is handy to know if you are doing anything with triangles. It can find a missing side of you have 2 of the 3 sides. a2 + b2 = c2

to turn this into a mixed radical you need to split 96 into 2 numbers: ex: √16 and √6.

this would equal 4√6.

to get back to a radical, you need to put the 4 back under the root sign. this would need 2 4’s. so now you have √4x4x6, which would equal √96

5: KHDUDCM

for measurement, this acronym is very hand for memorizing all the conversions.

this is the acronym: King Henry Doesn’t Usually Drink Chocolate Milk

what it actually stands for: Kilo, Hecto, Deca, Unit, Deci, Centi, Milli