Activities/Abacus: Difference between revisions

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File:Abacus-8-over-2.png|8÷2=4
File:Abacus-8-over-2.png|8÷2=4
File:Abacus-9-over-2.png|9÷2=4.5
File:Abacus-9-over-2.png|9÷2=4.5
File:Abacus-9-over-2.png|The result is 617283945.
File:Abacus-617283945.png|The result is 617283945.
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