Maths !! by Luca and Matthew

menuPlace valueExpanded notation trading

Place valuePlace value is very important because if we

didn’t know place value we would not know how to write numbers.

Place value was invented by the GreeksIf we didn’t know place value we wouldn’t know

maths altogether Place value is units, tens, hundreds, thousands

and tens of thousands (ones, longs, flats, blocks)

Expanded notationExpanded notation is making a number easier

to say. An example is 2641 in expanded notation is

2000+600+40+1.Expanded notation was also invented by the

Greeks

tradingTrading is similar to place value.I will show you an example=17+28=45. How

I know that is first you do 7+8=15. Because it is more than 10 you give the 10 to 1+2 Which is the 10s. Then 1+2+1=4. Add the 4 and the 5 together is 45.

Trading is also invented by the Greeks.

The End