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Mental math worksheet for adding and subtracting 10 or 100 from numbers, designed for students to practice with star-shaped answer boxes.

A black and white math worksheet titled "Adding and Subtracting" for mental math practice, featuring problems like 178 + 10 and 920 - 10, with star-shaped answer spaces and a cartoon girl playing guitar.

A black and white math worksheet titled "Adding and Subtracting" for mental math practice, featuring problems like 178 + 10 and 920 - 10, with star-shaped answer spaces and a cartoon girl playing guitar.

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