题目内容
计算1200-(1200-1200×
)÷0.375.
| 3 |
| 4 |
1200-(1200-1200×
)÷0.375,
=1200-1200×(1-
)÷
,
=1200-1200×
×
,
=1200×(1-
),
=1200×
,
=400.
| 3 |
| 4 |
=1200-1200×(1-
| 3 |
| 4 |
| 3 |
| 8 |
=1200-1200×
| 1 |
| 4 |
| 8 |
| 3 |
=1200×(1-
| 2 |
| 3 |
=1200×
| 1 |
| 3 |
=400.
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