题目内容
| 解方程. X÷5=4 | 368+X=740 | 2X=0.56 |
| X÷3=160 | 5X=13 | X-0.54=7.25. |
(1)X÷5=4,
X÷5×5=4×5,
x=20;
(2)368+X=740,
368+X-368=740-368,
X=372;
(3)2X=0.56,
2X÷2=0.56÷2,
X=0.28;
(4)X÷3=160,
X÷3×3=160×3,
X=480;
(5)5X=13,
5X÷5=13÷5,
X=2.6;
(6)X-0.54=7.25,
X-0.54+0.54=7.25+0.54,
X=7.79.
X÷5×5=4×5,
x=20;
(2)368+X=740,
368+X-368=740-368,
X=372;
(3)2X=0.56,
2X÷2=0.56÷2,
X=0.28;
(4)X÷3=160,
X÷3×3=160×3,
X=480;
(5)5X=13,
5X÷5=13÷5,
X=2.6;
(6)X-0.54=7.25,
X-0.54+0.54=7.25+0.54,
X=7.79.
练习册系列答案
相关题目