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脱式计算. (316+124)×8+23 4.5-(37+1.5)-47 (23+67×724)÷1132 920÷[12×(25+45)].

编辑:chaxungu时间:2026-04-27 13:18:51分类:小学数学题库

脱式计算.(能简算的要简算)
(
3
16
+
1
24
)×8+
2
3
4.5-(
3
7
+1.5)-
4
7
(
2
3
+
6
7
×
7
24
)÷
11
32
9
20
÷[
1
2
×(
2
5
+
4
5
)].

(1)(
3
16
+
1
24
)×8+
2
3
,
=
3
16
×8+
1
24
×8+
2
3
,
=
3
2
+
1
3
+
2
3
,
=
3
2
+(
1
3
+
2
3
),
=
3
2
+1,
=2
1
2
;

(2)4.5-(
3
7
+1.5)-
4
7
,
=4.5-
3
7
-1.5-
4
7
,
=(4.5-1.5)-(
3
7
+
4
7
),
=3-1,
=2;

(3)(
2
3
+
6
7
×
7
24
)÷
11
32
,
=(
2
3
+
1
4
)÷
11
32
,
=
11
12
÷
11
32
,
=
8
3
;

(4)
9
20
÷[
1
2
×(
2
5
+
4
5
)],
=
9
20
÷[
1
2
×
6
5
],
=
9
20
÷
3
5
,
=
3
4
.