问题
填空题
在○里填运算符号,在□里填数.
(1)x+27=52
解:x+27-27=520○□
x=□
(2)x÷3=12
解:x÷3×3=12○□
x=□
答案
(1)x+27=52
x+27-27=52-27
x=25;
(2)x÷3=12
x÷3×3=12×3
x=36
故答案为:-,27,25;×,3,36.
在○里填运算符号,在□里填数.
(1)x+27=52
解:x+27-27=520○□
x=□
(2)x÷3=12
解:x÷3×3=12○□
x=□
(1)x+27=52
x+27-27=52-27
x=25;
(2)x÷3=12
x÷3×3=12×3
x=36
故答案为:-,27,25;×,3,36.