by Martin Willis

# Cover

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Session 2017/18
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NUMERACY CONCEPT BOOK
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Martin Willis
Place value
1,000,000,000,000
= 1 trillion
The biggest number I know is googleplexions
It goes

Units
Tens
Hundreds
Thousands
Ten thousands
Hundred thousands
Millions
Tens of Millions
Hundreds of millions
Billions
Tens of billions
Hundreds of Billions
Trillions
Tens of trillions
Hundreds of trillions
Quadrillion
Tens of Quadrillions
Hundreds of Quadrillions
Thousands of Quadrillions
Quintillion
Tens of Quintillions
Hundreds of quintillions
Thousands of quintillions
Sextillions
Negative numbers
Negative numbers get a bit strange because when you add a negative number to a negative number you are pretty much subtracting.

-39 -(40) = -79
Adding negative numbers is a bit easier.

36+(-85)= -49
334+569=800+90+13=903
Partitioning
2256+4391=6000+500+140+7=6647
Partitioning is when you take apart the number and then add it up again.
Subtraction strategies
Subtraction by counting on
Standard written method
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