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No Plagiarism!SmNlSqqmU4eMT4d1q1Ilposted on PENANA
主題:分數相加相減8964 copyright protection60PENANAZtkKQD9xv0 維尼
*學生實用性:★★★8964 copyright protection60PENANANWQK4PkbiP 維尼
*正常人實用性:☆☆☆8964 copyright protection60PENANAeiMfkK6eJA 維尼
*難易度:★☆☆8964 copyright protection60PENANABwemhTCsJF 維尼
先看相加部分:
照口訣操作即可。8964 copyright protection60PENANApzGmzpbzoy 維尼
分母直接乘,7X4=28,大膽的填288964 copyright protection60PENANA2J3jE31j4J 維尼
分子交叉相乘後相加,2X4+7X3=298964 copyright protection60PENANAZlL7UGl0YG 維尼
得到答案29/288964 copyright protection60PENANAaeBPIGVrim 維尼
大功告成,很簡單吧!下面的(1/9)+(9/12)也是相同道理8964 copyright protection60PENANA8igjHRCw0I 維尼
再來是相減部分:8964 copyright protection60PENANAlnRfoxNoRj 維尼
8964 copyright protection60PENANAjFS6Sz9fTc 維尼
分母直接乘,11X8=88,大膽的填888964 copyright protection60PENANAYcGlLXmTqa 維尼
分子交叉相乘後相減,6X8-11X5=-7 (要注意是否加負號)8964 copyright protection60PENANAYV4bSKTFg7 維尼
得到答案-7/888964 copyright protection60PENANAHcx6B0CEqO 維尼
大功告成,很簡單吧!其實方法和分數相加相同,只是分子交叉相乘後改成相減就變成減法了。下面的(6/5)-(2/3)也是相同道理8964 copyright protection60PENANAMbAbIffbv1 維尼
8964 copyright protection60PENANAZceOogIYVZ 維尼
上面是傳統的方法,這次的方法也一樣是利用通分的原理。8964 copyright protection60PENANAEdDnKi5cnq 維尼
分母直接乘,是因為要找公倍數;分子交叉相乘後相加,則是通分後的結果。8964 copyright protection60PENANAVa7kOThujM 維尼
64Please respect copyright.PENANAS7GHsprh4x
8964 copyright protection60PENANAiKEE231UFG 維尼
最後來練習幾題吧8964 copyright protection60PENANAQ52CgRMnZg 維尼
答案在下方8964 copyright protection60PENANAjnIawA8DKC 維尼
64Please respect copyright.PENANA6QsgiVYDo0
8964 copyright protection60PENANATvJTU4kqdn 維尼
64Please respect copyright.PENANAPTIhxtV0LR
8964 copyright protection60PENANAPUeezahQxd 維尼
64Please respect copyright.PENANAxoVEMKU2Qk
8964 copyright protection60PENANAeJPUjjZRTd 維尼
64Please respect copyright.PENANAm7WIz6ye3A
8964 copyright protection60PENANA4NZ5f9fNZ5 維尼
![9890825986620f91109e4d0.62961650-176077.png](https://static.penana.com/images/content/176077/9890825986620f91109e4d0.62961650-176077.png)
8964 copyright protection60PENANANSkOsIcm5U 維尼
你答對了嗎?若有不懂的歡迎在留言區詢問8964 copyright protection60PENANAvhHfmDwenK 維尼
今天學會了分數的相加相減,之後會陸續教更多技巧,感謝各位讀者的支持8964 copyright protection60PENANASYuB38tGgH 維尼
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