巧算:6.4*99+8*0.8

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/16 13:54:20
巧算:6.4*99+8*0.8巧算:6.4*99+8*0.8巧算:6.4*99+8*0.86.4*99+8*0.8=6.4*(99+1)=6.4*100=640因为8*0.8=6.4

巧算:6.4*99+8*0.8
巧算:6.4*99+8*0.8

巧算:6.4*99+8*0.8
6.4 * 99 + 8 * 0.8 = 6.4 *(99+1) = 6.4*100 = 640
因为 8 * 0.8=6.4