直接寫得數(shù)
7
8
×
8
9
=
4
5
×
5
4
=
4
25
×10
=
25-
24
25
=
4
5
×1.25
=
3
8
×0.25
=
1
5
11
×
9
16
=
5
8
+
3
10
=
2.8×1
4
7
=
3
16
×20
=
0.18×
2
9
=
2
3
×
9
10
=
1.25×
4
5
×8
=
(
4
7
-
1
4
)×28
=
4
11
+
2
11
×
11
6
=
7
8
×
8
9
=
7
9
4
5
×
5
4
=1,
4
25
×10
=
8
5
25-
24
25
=24
1
25
,
4
5
×1.25
=1,
3
8
×0.25
=
3
32
,
1
5
11
×
9
16
=
9
11
,
5
8
+
3
10
=
37
40
,
2.8×1
4
7
=4.4,
3
16
×20
=
15
4
,
0.18×
2
9
=0.04,
2
3
×
9
10
=
3
5
,
1.25×
4
5
×8
=8,
(
4
7
-
1
4
)×28
=9.
4
11
+
2
11
×
11
6
=
23
33
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