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在期末检测卷中有这样一道试题:有一块长90厘米、宽70厘米的长方形玻璃。王师傅想用它做一个长50厘米、宽40厘米、高25厘米的无盖金鱼缸,但他不知道这块玻璃够不够?你认为够吗?(请用计算说明)参考答案的评分意见是:90×70=6300(平方厘米):50×40+40×25×2+50×25×2=6500(平方厘米),6300<6500,这块玻璃不够。(两个图形计算正确各得2分,结论正确得2分,累计6分)在阅卷的过程中,我们发现除了与参考答案相同的解法外,学生还有以下几种解法。
At the end of the test volume there is such a test: There is a 90 cm long and 70 cm wide rectangular glass. Master Wang wanted to use it as a capless goldfish tank 50cm long, 40cm wide and 25cm high, but he did not know enough of this glass? Do you think that enough? Is: 90 × 70 = 6300 (square centimeters): 50 × 40 + 40 × 25 × 2 + 50 × 25 × 2 = 6500 (square centimeters), 6300 <6500, this piece of glass is not enough. (Two figures correctly calculated each two points, the conclusion was correct 2 points, a total of 6 points) in the marking process, we found that in addition to the same solution as the reference answer, the students have the following solutions.