题目内容

选择最合理的方法进行计算
99
23
24
×24
4
3
5
×
7
9
-3
3
5
÷1
2
7
1
2
+1÷3.8×3
4
5
+3.5
(9
1
3
-3.25)÷2
1
2
+1.05
2
1
3
÷[(5
1
15
-3
3
5
)×15]
[5-(9
1
10
-4
1
5
)×
5
7
]÷1
1
2

(1)99
23
24
×24,
=(99+
23
24
)×24,
=99×24+
23
24
×24,
=2376+23,
=2399;

(2)4
3
5
×
7
9
-3
3
5
÷1
2
7

=4
3
5
×
7
9
-3
3
5
×
7
9

=(4
3
5
-3
3
5
)×
7
9

=1×
7
9

=
7
9


(3)
1
2
+1÷3.8×3
4
5
+3.5,
=
1
2
+
5
19
×3
4
5
+3.5,
=
1
2
+1+3.5,
=1.5+3.5,
=5;

(4)(9
1
3
-3.25)÷2
1
2
+1.05,
=6
1
12
÷2
1
2
+1.05,
=
73
30
+1.05,
=3
29
30


(5)2
1
3
÷[(5
1
15
-3
3
5
)×15],
=2
1
3
÷[1
7
15
×15],
=2
1
3
÷[1
7
15
×15],
=2
1
3
÷22,
=
7
66


(6)[5-(9
1
10
-4
1
5
)×
5
7
]÷1
1
2

=[5-4
9
10
×
5
7
]÷1
1
2

=[5-
7
2
]÷1
1
2

=
3
2
÷1
1
2

=1.
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