Traditional Culture Encyclopedia - Weather inquiry - Fifteen-day weather forecast in Lianjiang county
Fifteen-day weather forecast in Lianjiang county
19?
Special topic: application problem.
Analysis: subtract the temperature of Beijing from the temperature of Lianjiang, and then calculate it according to the fact that subtracting a number is equal to adding the reciprocal of this number.
Judging from the meaning of the question,13-(-6) = "13"+6 =19.
Comments: This topic mainly investigates the algorithm of rational number subtraction, and mastering the algorithm skillfully is the key to solving the problem.
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