题目内容

计算:
(1)[14.8+(3
3
8
-1.5)×1
1
25
]÷4
3
4

(2)3.5÷1
8
9
+6.5×[12×(
5
6
-0.3)-0.15)].
(1)[14.8+(3
3
8
-1.5)×1
1
25
]÷4
3
4

=[14.8+1.875×1
1
25
]÷4
3
4

=[14.8+1.95]÷4
3
4

=16.75÷4
3
4

=
67
19


(2)3.5÷1
8
9
+6.5×[12×(
5
6
-0.3)-0.15],
=3.5÷1
8
9
+6.5×[12×
8
15
-0.15],
=3.5÷1
8
9
+6.5×[6.4-0.15],
=3.5÷1
8
9
+6.5×6.25,
=
63
34
+40.625,
=42
65
136
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