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55x6 55x2的简便运算

55x6一45x6=(55-45)x6=60

(50+5)(60-5)=3000+50-25=3025

55*55/56 =(56-1)*55/56 =56*55/56-1*55/56 =55-55/56 =54又56分之1 你好,本题已解答,如果满意 请点右上角“采纳答案”.

45x55+55x55=(45+55)x55=100x55=5500

55x56分之55=(56-1)x56分之55=1-56分之55=56分之1

55x66十45x66=55*6.6+45*6.6=6.6*(55+45)=6.6*100=660

55x46-55 +55x55=55x(46-1+55)=55*100=5500

45x53十55x55=45x53十55x(53+2)=45x53十55x53+55x2=(45+55)x53+55x2=100x53+110=5410

55x55=5 x(5+1)x100 +5x5=3025 当乘数和被乘数前位数字相同,后位数字的和为10的时候,结果为前位数加1自乘,后面接着写后位乘积. 例如 76x74,前位数7相同,后位6+4=10,满足条件. 写出结果 56(7x8),后面写24(4x6),即是5624 同

=(45+55)X55=100X55=5500 望采纳

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