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去年,我地初中招生数学试卷中,有一道加试题:“观察下面的式子(先从上往下看,再从下往上看),简要地写出比值的变化规律.”4.2∶3=1.442∶3=14420∶3=140
Last year, in my junior high school enrollment math exam, I added a test question: “Look at the following formula (look first from the bottom up and then from bottom to top) and write down the law of the ratio briefly.” 4.2 : 3 = 1.442: 3 = 14420: 3 = 140