A bag of potato chips is marked with a net weight of 250 (±5) grams, so what is the actual maximum mass of this bag of potato chips?
一袋薯片包装上标明净重250(±5)克，那么这袋薯片实际上质量最多是多少．
<gadget id="calculator">250 + 5</gadget>
<output>255</output>

<result>255</result>