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脱式计算.步步为“赢 .胜利一定属于你! 35×140-2987 (27+15)×35 57÷(23-15) 0.34×5+0.96÷32 (56-18)÷512 920÷[12×(25+45)].

编辑:chaxungu时间:2026-04-27 13:21:15分类:小学数学题库

脱式计算.步步为“赢”,胜利一定属于你!
35×140-2987(
2
7
+
1
5
)×35
5
7
÷(
2
3
-
1
5
)
0.34×5+0.96÷32(
5
6
-
1
8
)÷
5
12
9
20
÷[
1
2
×(
2
5
+
4
5
)].

(1)35×140-2987,
=4900-2987,
=1913;

(2)(
2
7
+
1
5
)×35,
=
2
7
×35+
1
5
×35,
=10+7,
=17;

(3)
5
7
÷(
2
3
-
1
5
),
=
5
7
÷
7
15
,
=
75
49
;

(4)0.34×5+0.96÷32,
=1.7+0.03,
=1.73;

(5)(
5
6
-
1
8
)÷
5
12
,
=
17
24
÷
5
12
,
=
17
10
;

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