55%X-20%X=280
| 1 |
| 4 |
| 3 |
| 2 |
50%X+
| 8 |
| 9 |
| 17 |
| 18 |
0.35X=280,
0.35X÷0.35=280÷0.35,
X=800;
(2)
| 1 |
| 4 |
| 3 |
| 2 |
| 1 |
| 4 |
| 1 |
| 4 |
| 3 |
| 2 |
| 1 |
| 4 |
0.25X÷0.25=
| 5 |
| 4 |
X=5;
(3)50%X+
| 8 |
| 9 |
| 17 |
| 18 |
50%X+
| 8 |
| 9 |
| 8 |
| 9 |
| 17 |
| 18 |
| 8 |
| 9 |
0.5X÷0.5=
| 1 |
| 18 |
X=
| 1 |
| 9 |
编辑:chaxungu时间:2026-04-27 13:38:22分类:小学数学题库
| 1 |
| 4 |
| 3 |
| 2 |
| 8 |
| 9 |
| 17 |
| 18 |
| 1 |
| 4 |
| 3 |
| 2 |
| 1 |
| 4 |
| 1 |
| 4 |
| 3 |
| 2 |
| 1 |
| 4 |
| 5 |
| 4 |
| 8 |
| 9 |
| 17 |
| 18 |
| 8 |
| 9 |
| 8 |
| 9 |
| 17 |
| 18 |
| 8 |
| 9 |
| 1 |
| 18 |
| 1 |
| 9 |