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No Plagiarism!UCnPpBBALqzvVP001wFYposted on PENANA
主題:兩位數平方8964 copyright protection33PENANAEvlRHgvnSQ 維尼
*學生實用性:★★★8964 copyright protection33PENANAwYXp2Q08Wr 維尼
*正常人實用性:★☆☆8964 copyright protection33PENANAOC0gqNWfji 維尼
*難易度:★★☆8964 copyright protection33PENANABdftS28dz1 維尼
平方=自己X自己,例:62的平方=62X62。照口訣操作即可8964 copyright protection33PENANAgL6b3wz8P1 維尼
個位:7X7=49,填498964 copyright protection33PENANARYDeHq17UJ 維尼
十位:7X7=49,填498964 copyright protection33PENANAYepkYV3Zbz 維尼
交叉相乘再2倍:7X7X2⮕填98 (從十位數開始往左填)8964 copyright protection33PENANApeCTNMUchl 維尼
最後相加起來,得到答案5929。很簡單吧!8964 copyright protection33PENANAkCoVjLeJey 維尼
再看一題:8964 copyright protection33PENANAzXZSC6YPH2 維尼
8964 copyright protection33PENANAPMPdIEN4GV 維尼
個位:2X2=4,填04 (不足10需補零,不然會算錯)8964 copyright protection33PENANAbVUH3FPMgs 維尼
十位:4X4=16,填168964 copyright protection33PENANAZWoxzpy5Kr 維尼
交叉相乘再2倍:4X2X2⮕填16 (從十位數開始往左填)8964 copyright protection33PENANAICXBnBQwwv 維尼
最後相加起來,得到答案1764。很簡單吧!8964 copyright protection33PENANA2mZTkK5W1a 維尼
最後來練習幾題吧,前期不熟建議用紙筆幫忙,熟練後便可直接算了8964 copyright protection33PENANAwiCGvLhDKC 維尼
答案在下方8964 copyright protection33PENANA8NGmUG1qk1 維尼
37Please respect copyright.PENANAD7VfXhzgeS
8964 copyright protection33PENANA7bqY8WKfEb 維尼
37Please respect copyright.PENANAkvImjYv5yB
8964 copyright protection33PENANAfGZzTpWl3N 維尼
37Please respect copyright.PENANAFTqD7POHoV
8964 copyright protection33PENANAggXOUz1Duj 維尼
37Please respect copyright.PENANAjuq9Mf2VfO
8964 copyright protection33PENANAzgzvYSk405 維尼
37Please respect copyright.PENANAlDHwIYWNHL
8964 copyright protection33PENANALSusVoURMR 維尼
8964 copyright protection33PENANAfLTKJTrD2r 維尼
第3題注意一下:8964 copyright protection33PENANA3zGnELgtAK 維尼
個位:1X1=1,填01 (不足10需補零,不然會算錯)8964 copyright protection33PENANAX643TI2x4o 維尼
十位:2X2=4,填48964 copyright protection33PENANAMA6P9FcIEH 維尼
交叉相乘再2倍:2X1X2⮕填04 (從十位數開始往左填)8964 copyright protection33PENANAUpfIWDy8Yd 維尼
最後相加起來,得到答案441。8964 copyright protection33PENANAWeZix9xdQx 維尼
你答對了嗎?若有不懂的歡迎在留言區詢問8964 copyright protection33PENANATtgZ369Mol 維尼
證明8964 copyright protection33PENANA4tXqxFjoDp 維尼
這裡用圖形解釋給大家聽:68X68是不是等於一個邊長為68的正方形面積!8964 copyright protection33PENANAgv67PNJS2w 維尼
現在把正方形切成4分,黑色為邊長,白色為面積。8964 copyright protection33PENANANAgqwE51xj 維尼
先看個位:8X8=紫色正方形面積8964 copyright protection33PENANAJe5Sh99bAE 維尼
十位:60X60=藍色正方形面積8964 copyright protection33PENANAmWJAHsNiTI 維尼
交叉相乘再2倍:兩個橘色長方形面積8964 copyright protection33PENANAb7rKmqSDLH 維尼
今天學會了兩位數平方的速算,之後會陸續教更多技巧,謝謝各位。8964 copyright protection33PENANA3XqxZCYECy 維尼
172.70.178.237
ns 172.70.178.237da2