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下面各题能简便计算的要简便计算. 725÷[(34-25)×25] 0.25×3.2×12.5 22×(211+316)×8 935×811+335×911 99989+9989+989 110+14

编辑:chaxungu时间:2026-04-27 13:18:57分类:小学数学题库

下面各题能简便计算的要简便计算.
7
25
÷[(
3
4
-
2
5
)×
2
5
]
0.25×3.2×12.522×(
2
11
+
3
16
)×8
9
35
×
8
11
+
3
35
×
9
11
999
8
9
+99
8
9
+9
8
9
1
10
+
1
40
+
1
88
+
1
154
.

(1)
7
25
÷[(
3
4
-
2
5
)×
2
5
],
=
7
25
÷[
7
20
×
2
5
],
=
7
25
÷
7
50
,
=2;

2)0.25×3.2×12.5,
=0.25×(4×0.8)×12.5,
=(0.25×4)×(0.8×12.5),
=1×1,
=1;

(3)22×(
2
11
+
3
16
)×8,
=22×
2
11
×8+22×
3
16
×8,
=32+33,
=65;

(4)
9
35
×
8
11
+
3
35
×
9
11
,
=
8
35
×
9
11
+
3
35
×
9
11
,
=(
8
35
+
3
35
)×
9
11
,
=
11
35
×
9
11
,
=
9
35
;

(5)999
8
9
+99
8
9
+9
8
9
,
=999
8
9
+99
8
9
+9
8
9
+(
1
9
+
1
9
+
1
9
-
1
3
),
=(999
8
9
+
1
9
)+(99
8
9
+
1
9
)+(9
8
9
+
1
9
)-
1
3
,
=1000+100+10-
1
3
,
=1110-
1
3
,
=1109
2
3
;

(6)
1
10
+
1
40
+
1
88
+
1
154
,
=
1
2×5
+
1
5×8
+
1
8×11
+
1
11×14
,
=
1
3
×[(
1
2
-
1
5
)+(
1
5
-
1
8
)+(
1
8
-
1
11
)+(
1
11
-
1
14
)],
=
1
3
×[
1
2
-
1
5
+
1
5
-
1
8
+
1
8
-
1
11
+
1
11
-
1
14
],
=
1
3
×[
1
2
-
1
14
],
=
1
3
×
3
7
,
=
1
7
.