文档介绍：5
2
2
×2 =
27 ×
=×2=
5
18
19
4
×8 =
5 ×
2
=
15
15
7
×12 =
57
×
2
=
18
3
25
×11
=
16 ×3
=
16× =
8
22
50
4
4
×6 =
4
3
4
5
5
9
× =
× =
8
5
6
4
×0 =
13
3
3
5
× =
×8 =
13
48
5
3
3
×
3
2
18
× =
=
×3 =
5
25
33
4
3
8
×
15
2
5
× =
=
×38 =
8
8
19
4
35
=
2
×
3
3
×
=
×24 =
7
8
16
14
1
14
4
2
7×9 =
5×15=
15 ×10 =
3
=
4
3
1
1 ×
15
× =
×2 =
81
8
16
4
3
4
6
2
27
× =
9
× =
16× =
8
8
3
6
3
9
1
2
× =
× =
25× =
8
3
7
5
4
×10 =
7
240× =
5
×2 =
8
18
4
7
4
×
3
3
13
× =
7
=
×3 =
8
14
24
4
1
7
7
3
17
× =
5
× =
×4 =
8
5
44
7
4
3
2
16
×21 =
5
×20 =
49×7=
4
5
4
5
2
5
× =
× =
12× =
4
6
3
35
6
2
2
2
6
× =
4
× =
×25 =
7
9
5
1
3
=
3
2
45 ×
2
=
×
5
× =
9
19
3
15
4 ×34=
7 ×16=
57 ×2
=
17
12
18
38
18
3
=
2
×2 =
2
3
×
27
× =
16