Activities/Abacus: Difference between revisions
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File:Abacus-fractions.png|20 + 1 + 1/2 + 1/3 + 1/6 = 22 | File:Abacus-fractions.png|20 + 1 + 1/2 + 1/3 + 1/6 = 22 | ||
</gallery> | </gallery> | ||
== Modifying Abacus == | |||
==Discussion== | ==Discussion== | ||