题目内容
计算
(1)[6
-(8.5-
)÷3.5]×(2
+
)
(2)(0.34×2400×25%+3×7
+26.25÷
)÷25.
(1)[6
| 7 |
| 15 |
| 3 |
| 4 |
| 2 |
| 7 |
| 1 |
| 3 |
(2)(0.34×2400×25%+3×7
| 1 |
| 2 |
| 3 |
| 7 |
(1)[6
-(8.5-
)÷3.5]×(2
+
),
=[6
-7.75÷3.5]×
,
=[6
-
]×
,
=
×
,
=
;
(2)(0.34×2400×25%+3×7
+26.25÷
)÷25,
=(204+22.5+61.25)÷25,
=287.75÷25,
=11.51.
| 7 |
| 15 |
| 3 |
| 4 |
| 2 |
| 7 |
| 1 |
| 3 |
=[6
| 7 |
| 15 |
| 55 |
| 21 |
=[6
| 7 |
| 15 |
| 31 |
| 14 |
| 55 |
| 21 |
=
| 893 |
| 210 |
| 55 |
| 21 |
=
| 9823 |
| 882 |
(2)(0.34×2400×25%+3×7
| 1 |
| 2 |
| 3 |
| 7 |
=(204+22.5+61.25)÷25,
=287.75÷25,
=11.51.
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