题目内容
18×
+0.65×
-
×18+
÷1
.
| 3 |
| 7 |
| 8 |
| 13 |
| 2 |
| 7 |
| 5 |
| 13 |
| 7 |
| 13 |
原式=
+
,
=18×(
-
)+0.65×(
+
),
=18×
+0.65×1,
=2
+
,
=3
.
18×
| ||||
| . |
0.65×
| ||||||
| . |
=18×(
| 3 |
| 7 |
| 2 |
| 7 |
| 8 |
| 13 |
| 5 |
| 13 |
=18×
| 1 |
| 7 |
=2
| 4 |
| 7 |
| 13 |
| 20 |
=3
| 31 |
| 140 |
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