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Activities/Abacus (view source)

Revision as of 18:00, 3 April 2010

28 bytes added ,  18:00, 3 April 2010
→‎Reading the abacus
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File:Abacus-6.png|1 bottom bead is up and 1 top bead is down, corresponding to 6 units
 
File:Abacus-6.png|1 bottom bead is up and 1 top bead is down, corresponding to 6 units
 
File:Abacus-10.png|5 bottom beads are up and 1 top bead is down, corresponding to 10 units (time to "carry" to the left)
 
File:Abacus-10.png|5 bottom beads are up and 1 top bead is down, corresponding to 10 units (time to "carry" to the left)
 +
File:Abacus-54321.png|54321
 
</gallery>
 
</gallery>
  
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