题目内容

计算下面各题,能简算的要简算.
(1)6
3
5
-5.08×(0.875-
5
8

(2)42
5
7
-11
7
8
-23
9
17

(3)6.58×1
3
5
+3.42÷
5
8

(4)2.4×(
1
2
-
1
3
)÷1
1
7

(5)[4+(1
5
6
-0.75)
÷2
8
9
]
×2
1
7
(1)6
3
5
-5.08×(0.875-
5
8
),
=6
3
5
-5.08×0.25,
=6
3
5
-1.27,
=5.33;

(2)42
5
7
-11
7
8
-23
9
17

=30
47
56
-23
9
17

=7
295
952


(3)6.58×1
3
5
+3.42÷
5
8

=1
3
5
×
(6.58+3.42),
=1
3
5
×
10,
=16;

(4)2.4×(
1
2
-
1
3
)÷1
1
7

=2.4×
1
6
÷1
1
7

=0.4÷1
1
7

=0.35;

(5)[4+(1
5
6
-0.75)
÷2
8
9
]
×2
1
7

=[4+1
1
12
÷2
8
9
]
×2
1
7

=[4+
3
8
]×2
1
7

=4
3
8
×2
1
7

=9
3
8
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