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Adding three numbers - problem solving
In this animation an ant needs to work out if there is enough space to house 29 ants in 3 houses. A friend suggests she counts how many ants can go into each house to see if there are the right number of spaces. The spaces are counted - there are 13, 7 and 9. On a note pad, the ant adds 13 and 7 to make 20, then adds the 9 to make 29 - so there are enough spaces.
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