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SAMPLE
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Math Skills & Strategies • Level B
Un1it
Activity:
Now try using this strategy to solve a different problem.
} There are 18 birds in a tree. 12 birds fly away. How many birds are left in the tree?
Strategy UseaChart,List,Frame,orGraph.Useanumber frame to solve 18 – 12.
Tens
Ones
1
8
1
2
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