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512×28%×314 79÷12÷3536 35×89÷58 7÷70% 514×(1425+28) 1623×27+16×1923.

编辑:chaxungu时间:2026-04-27 14:17:41分类:小学数学题库

5
12
×28%×
3
14
7
9
÷
1
2
÷
35
36
3
5
×
8
9
÷
5
8
7÷70%
5
14
×(
14
25
+28)
16
23
×27+16×
19
23
(1)
5
12
×28%×
3
14

=
5
12
×(
14
50
×
3
14
),
=
5
12
×
3
50

=
1
40


(2)
7
9
÷
1
2
÷
35
36

=
7
9
×
36
35
×2,
=
8
5


(3)
3
5
×
8
9
÷
5
8

=
8
15
×
8
5

=
64
75


(4)7÷70%=100;

(5)
5
14
×(
14
25
+28)
=
5
14
×
14
25
+
5
14
×28,
=
1
5
+10,
=10
1
5


(6)
16
23
×27+16×
19
23

=
27
23
×16+16×
19
23

=(
27
23
+
19
23
)×16,
=2×16,
=32.