Multiply by hand

the nine facts

Demonstrates a finger counting trick for multiplying by nine.

Rourke Pub.
2008
9781600446870
book

Holdings

hidmidmiidnidwidlocation_codelocationbarcodecallnumdeweycreatedupdated
3229468665545215743856055398102988T 2970238513.2 FRE513.216407292551640729255