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计算下面各题.能用简便方法的就用简便方法99×9798 24×(78+32-34) 16×23÷(45-815) 49÷45-(15-13) 1-(14+38)÷14 358×57+27÷835.

编辑:chaxungu时间:2026-04-27 14:18:05分类:小学数学题库

计算下面各题,能用简便方法的就用简便方法
99×
97
98

24×(
7
8
+
3
2
-
3
4
)
 
1
6
×
2
3
÷(
4
5
-
8
15
)
4
9
÷
4
5
-(
1
5
-
1
3
)
1-(
1
4
+
3
8
)÷
1
4
35
8
×
5
7
+
2
7
÷
8
35
.
(1)99×
97
98
,
=(98+1)×
97
98
,
=98×
97
98
+1×
97
98
,
=97+
97
98
,
=97
97
98
;

(2)24×(
7
8
+
3
2
-
3
4
),
=24×
7
8
+24×
3
2
-24×
3
4
,
=21+36-18,
=39;

(3)
1
6
×
2
3
÷(
4
5
-
8
15
),
=
1
9
÷
4
15
,
=
1
9
×
15
4
,
=
5
12
;

(4)
4
9
÷
4
5
-(
1
5
-
1
3
),
=
4
9
×
5
4
-
1
5
+
1
3
,
=
5
9
+
1
3
-
1
5
,
=
31
45
;

(5)1-(
1
4
+
3
8
)÷
1
4
,
=1-
5
8
×4,
=1-
5
2
,
=-
3
2
;

(6)
35
8
×
5
7
+
2
7
÷
8
35
,
=
35
8
×
5
7
+
2
7
×
35
8
,
=
35
8
×(
5
7
+
2
7
),
=
35
8
×1,
=
35
8
.