12.5x(0.7x0.8) 怎样简便运算?

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 22:47:40
12.5x(0.7x0.8) 怎样简便运算?
x)343030гTxlb$LΆLB 1- ͡"~qAb06jf B d9.Pq^

12.5x(0.7x0.8) 怎样简便运算?
12.5x(0.7x0.8) 怎样简便运算?

12.5x(0.7x0.8) 怎样简便运算?
12.5x(0.7x0.8)
=12.5*0.8*0.7
=10*0.7
=7

12.5x(0.7x0.8)
=12.5*0.8*0.7
=125*8*0.01*0.7
=1000*0.01*0.7
=7

12.5*(0.7*0.8)
=12.5*0.8*0.7
=10*0.7
=7