您现在的位置是:首页 > 学科知识查询 > 小学数学题库

脱式计算2-310-58÷2528 4×58+84×1.2 223×817+923×217 23+(45+15)÷13.

编辑:chaxungu时间:2026-04-27 13:18:49分类:小学数学题库

脱式计算(能简算的要简算)
2-
3
10
-
5
8
÷
25
28
4×58+84×1.2
2
23
×
8
17
+
9
23
×
2
17
2
3
+(
4
5
+
1
5
)÷
1
3
.
①2-
3
10
-
5
8
÷
25
28
,
=2-
3
10
-
7
10
,
=2-(
3
10
+
7
10
),
=2-1,
=1;

②4×58+84×1.2,
=232+100.8,
=332.8;

③
2
23
×
8
17
+
9
23
×
2
17
,
=
8
23
×
2
17
+
9
23
×
2
17
,
=
2
17
×(
8
23
+
9
23
)
=
2
17
×
17
23
,
=
2
23
;

④
2
3
+(
4
5
+
1
5
)÷
1
3
,
=
2
3
+1÷
1
3
,
=
2
3
+3,
=3
2
3
.