1.5 1.5 1.5 1.5 1.5=4.5 1.5 1.5 1.5 1.5 1.5=6使用運算符號和括弧使等式成立. RT
1.5+1.5+1.5+1.5-1.5=4.5
(1.5+1.5)*(1.5+1.5)/1.5=6
0.2 0.2 0.2 0.2 0.2=0填上符號或括弧
(0.2-0.2)×(0.2+0.2÷0.2)=0
0.25__0.25__0.25__0.25=0.125在括弧裏填符號
0.25_X_0.25_+_0.25_X_0.25=0.125