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计算下面各题. 12÷72×78 713×34+34×613 37÷711+47÷711 (38+23)÷124 37+3.6-17+6.4 119×3.8-3.8×29.

编辑:chaxungu时间:2026-04-27 13:18:24分类:小学数学题库

计算下面各题.(能简算的要简算)
12÷
7
2
×
7
8
7
13
×
3
4
+
3
4
×
6
13
3
7
÷
7
11
+
4
7
÷
7
11
(
3
8
+
2
3
)÷
1
24
3
7
+3.6-
1
7
+6.4
11
9
×3.8-3.8×
2
9
.
(1)12÷
7
2
×
7
8
,
=12×
2
7
×
7
8
,
=12×(
2
7
×
7
8
),
=12×
1
4
,
=3;

(2)
7
13
×
3
4
+
3
4
×
6
13
,
=(
7
13
+
6
13
)×
3
4
,
=1×
3
4
,
=
3
4
;

(3)
3
7
÷
7
11
+
4
7
÷
7
11
,
=
3
7
×
11
7
+
4
7
×
11
7
,
=(
3
7
+
4
7
)×
11
7
,
=1×
11
7
,
=
11
7
;

(4)(
3
8
+
2
3
)÷
1
24
,
=(
3
8
+
2
3
)×24,
=
3
8
×24+
2
3
×24,
=9+16,
=25;

(5)
3
7
+3.6-
1
7
+6.4,
=(
3
7
-
1
7
)+(3.6+6.4),
=
2
7
+10,
=10
2
7
;

(6)
11
9
×3.8-3.8×
2
9
,
=(
11
9
-
2
9
)×3.8,
=1×3.8,
=3.8.