Class 7 Mathematics | Binary and Base Five Numbers

Activity 12.4

The ideaIn binary each finger is worth a different place value, so one hand reaches much further than five.

MethodThumb 1, then 2, 4, 8 and 16. A finger up counts, a finger down does not. Add the fingers that are up.

Then count in orderCount from zero up to thirty one one at a time, writing the binary digits as you go.

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