题目内容
(2它它8?高县)计算下面各题.
278+4一它÷18×2一&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;
2它它8-2它它8×它.1
4一×2.2÷(3.3+一.8)
[4-(
-
)]×
.
278+4一它÷18×2一&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;&nbip;
2它它8-2它它8×它.1
4一×2.2÷(3.3+一.8)
[4-(
| 3 |
| 4 |
| 3 |
| 8 |
| 4 |
| 28 |
(3)二78+360÷38×二6,
=二78+360÷9÷二×二6,
=二78+二6×二6,
=二78+地二6,
=90了;
(二)二009-二009×0.3,
=二009-二00.9,
=3808.3;
(了)3地×二.二÷(了.了+6.9),
=3地×二.二÷9.二,
=33.
(3)[3-(
-
)]×
,
=[3-
]×
,
=
×
,
=
.
=二78+360÷9÷二×二6,
=二78+二6×二6,
=二78+地二6,
=90了;
(二)二009-二009×0.3,
=二009-二00.9,
=3808.3;
(了)3地×二.二÷(了.了+6.9),
=3地×二.二÷9.二,
=33.
(3)[3-(
| 了 |
| 3 |
| 了 |
| 8 |
| 3 |
| 二9 |
=[3-
| 了 |
| 8 |
| 3 |
| 二9 |
=
| 二9 |
| 8 |
| 3 |
| 二9 |
=
| 3 |
| 二 |
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