在( )中填入符号+、—、*、/和括号,使下面算式的答案分别是0,0.2,0.4,0.6,0.8,1.0.2( )0.2( )0.2( )0.2( )0.2=00.2( )0.2( )0.2( )0.2( )0.2=0.20.2( )0.2( )0.2( )0.2( )0.2=0.40.2( )0.2( )0.2( )0.2( )0.2=0.60.2( )0.2( )0.2( )0.2( )0.2=0.8
问题描述:
在( )中填入符号+、—、*、/和括号,使下面算式的答案分别是0,0.2,0.4,0.6,0.8,1.
0.2( )0.2( )0.2( )0.2( )0.2=0
0.2( )0.2( )0.2( )0.2( )0.2=0.2
0.2( )0.2( )0.2( )0.2( )0.2=0.4
0.2( )0.2( )0.2( )0.2( )0.2=0.6
0.2( )0.2( )0.2( )0.2( )0.2=0.8
答
0.2+0.2/0.2-0.2/0.2=0
0.2+0.2-0.2+0.2-0.2=0.2
0.2*0.2*0.2-0.2-0.2=0.4
0.2*0.2+0.2+0.2-0.2=0.6
0.2*0.2*0.2+0.2-0.2=0.8
答
(0.2-0.2)×0.2-0.2+0.2=0
0.2+0.2-0.2-0.2+0.2=0.2
(0.2-0.2)×0.2+0.2+0.2=0.4
0.2-0.2+0.2+0.2+0.2=0.6
0.2÷0.2-0.2+0.2-0.2=0.8
答
[0.2(-)0.2](*)0.2(+)0.2(-)0.2=0
0.2(+)0.2(+)0.2(-)0.2(-)0.2=0.2
0.2(/)0.2(-)0.2(-)0.2(-)0.2=0.4
0.2(/)0.2(*)0.2(+)0.2(+)0.2=0.6
0.2(/)0.2(+)0.2(-)0.2(-)0.2=0.8