简算:9999x77778+3333x6666 5.6x69.32+138.64x0.05+693.2x0.43

问题描述:

简算:9999x77778+3333x6666 5.6x69.32+138.64x0.05+693.2x0.43

9999x77778+3333x6666=9999x77778+9999x2222=9999 x(77778+2222)=9999x80000=7999200005.6x69.32+138.64x0.05+693.2x0.43=69.32x(5.6+0.1+4.3)=69.32x10原创答案哦!=693.2