No Plagiarism!ovodm3jYxVll0Q5z49L5posted on PENANA
主題:分數相加相減8964 copyright protection203PENANAyWeoJ6JMUY 維尼
*學生實用性:★★★8964 copyright protection203PENANAH3PMNUQAYH 維尼
*正常人實用性:☆☆☆8964 copyright protection203PENANAaMRFX8TraZ 維尼
*難易度:★☆☆8964 copyright protection203PENANA8YA4RDOKrs 維尼
先看相加部分:
照口訣操作即可。8964 copyright protection203PENANArtV9c1N0Wg 維尼
分母直接乘,7X4=28,大膽的填288964 copyright protection203PENANAph3IMiv8V0 維尼
分子交叉相乘後相加,2X4+7X3=298964 copyright protection203PENANAYiXJgshijD 維尼
得到答案29/288964 copyright protection203PENANA3q9nwfe4VY 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 protection203PENANAjXrTl12jBK 維尼
再來是相減部分:8964 copyright protection203PENANARel00HY3sF 維尼
8964 copyright protection203PENANAmHDBhPZpmG 維尼
分母直接乘,11X8=88,大膽的填888964 copyright protection203PENANAP5H3QhuqpX 維尼
分子交叉相乘後相減,6X8-11X5=-7 (要注意是否加負號)8964 copyright protection203PENANAA1rrLuC5NP 維尼
得到答案-7/888964 copyright protection203PENANAqruOidk7bR 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 protection203PENANASynlSIZmH3 維尼
8964 copyright protection203PENANAe8USNBdux1 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 protection203PENANAATVqPrrTS2 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 protection203PENANAiO8WRh8SEq 維尼
207Please respect copyright.PENANAMbaSYR9NBx
8964 copyright protection203PENANAg5UIudYFOE 維尼
最後來練習幾題吧8964 copyright protection203PENANA1gzgnpbo2X 維尼
答案在下方8964 copyright protection203PENANAtoHh7ZaDwE 維尼
207Please respect copyright.PENANAhxx5ydVFyr
8964 copyright protection203PENANAiDWmVUtNkS 維尼
207Please respect copyright.PENANAhRWEU7uxjp
8964 copyright protection203PENANAlrkHG6Stp7 維尼
207Please respect copyright.PENANAVJEa2DyrU0
8964 copyright protection203PENANAGFvh2V6Lir 維尼
207Please respect copyright.PENANAmSCfJlf1K3
8964 copyright protection203PENANAZ66XownJfV 維尼

8964 copyright protection203PENANA8GipNBv0mO 維尼
你答對了嗎?若有不懂的歡迎在留言區詢問8964 copyright protection203PENANAJdyrMmeWbl 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 protection203PENANAzinF7sUacH 維尼
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