题目内容
| 计算.(能简便计算的要简便计算) 100.4-9+0.77÷1.1 |
98.7×0.9+98.7 | ||||||||||||
|
12-
|
①100.4-9+0.77÷1.1,
=100.4-9+0.7,
=91.4+0.7,
=92.1;
②98.7×0.9+98.7,
=98.7×(0.9+1),
=187.53;
③
÷[(
+
)×
]
=
÷[(
+
)×
]
=
÷
,
=
;
④12-
×7-
×3,
=12-
×(7-3),
=12-2.4,
=9.6;
=100.4-9+0.7,
=91.4+0.7,
=92.1;
②98.7×0.9+98.7,
=98.7×(0.9+1),
=187.53;
③
| 8 |
| 9 |
| 2 |
| 5 |
| 1 |
| 10 |
| 3 |
| 4 |
=
| 8 |
| 9 |
| 4 |
| 10 |
| 1 |
| 10 |
| 3 |
| 4 |
=
| 8 |
| 9 |
| 3 |
| 8 |
=
| 64 |
| 27 |
④12-
| 3 |
| 5 |
| 3 |
| 5 |
=12-
| 3 |
| 5 |
=12-2.4,
=9.6;
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