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Mental math worksheet for adding and subtracting 9 or 19 using quick strategies.

A math worksheet titled "Add or subtract 9 or 19: revision" from urbrainy.com, featuring mental strategies for adding and subtracting 19, with numbered problems and a cartoon mouse character providing a tip to add twenty and take one.

PNG 606×857 48.1 KB Free · Personal Use

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ID: #284201

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