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11 December, 00:38

Write two expressions to show a number increased by 11. Then, draw models to prove that both expressions represent the same thing.

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  1. S
    11 December, 02:59
    0
    n + 11 and 11 + n

    Step-by-step explanation:

    Let n be the unknown number,

    n is increased by 11,

    That is, n + 11

    By the commutative property of addition,

    The expression would be,

    11 + n

    For drawing a model that shows n + 11

    Take two boxes in which first shows n and second shows 11 and add them,

    Similarly, for showing 11 + n, take first box that shows 11 and second box that shows n then add them.
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