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What is the answer to the question 16 13 in the first volume of seventh grade mathematics? I don't understand the algorithm of stock.
(1) solution: (+1.25)+(-1.00)+(+1.25)+(+2.10)+(-0.30).

Yes, it has gone up. It has gone up, 3.3 yuan.

(2) Solution: The highest stock price is (+1.25)+(-1.00)+(+1.25)+(+2.10)+27 = 30.6 yuan.

Lowest price: (+1.25)+(-1.00)+27 = 27.25 yuan.

Hope to adopt

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