题目内容
(1
×8.12+5
÷
×8
)÷4
．
| 1 |
| 1998 |
| 31 |
| 75 |
| 2 |
| 3 |
| 1997 |
| 1998 |
| 11 |
| 48 |
(1
×8.12+5
÷
×8
)÷4
=（1
×
+
×
×8
）×
=（1
×
+
×8
）×
=
×（1
+8
）×
=
×10×
=19.2．
| 1 |
| 1998 |
| 31 |
| 75 |
| 2 |
| 3 |
| 1997 |
| 1998 |
| 11 |
| 48 |
=（1
| 1 |
| 1998 |
| 203 |
| 25 |
| 406 |
| 75 |
| 3 |
| 2 |
| 1997 |
| 1998 |
| 48 |
| 203 |
=（1
| 1 |
| 1998 |
| 203 |
| 25 |
| 203 |
| 25 |
| 1997 |
| 1998 |
| 48 |
| 203 |
=
| 203 |
| 25 |
| 1 |
| 1998 |
| 1997 |
| 1998 |
| 48 |
| 203 |
=
| 203 |
| 25 |
| 48 |
| 203 |
=19.2．
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