文档介绍:7×8=
4×5=8
×1=
2×10=
3×24=
22×5=
21
5
16
8
5
8
15
6
5
5
8
2
1
4
3
2
3
20×(3-7)
(6+8)×25
3×5×35×7×5
5×4×4
2
1
8
4
2
7
3
3
6
(20+
5
)×5
(9+27
)×27
6
×(18×30
)
(8-8
)×15
5
5
5
1
2
3
5
3
6
7
6
2
7
5
6×9+9×6
9×4+27×4
13×5-13×512×6-12×6
3
6
3
3
1
3
2
5
4
5
37×35
25
×24
(5+7
)×25
4×2+4×5
7-9×7
5
21
1
2
7
5
3
4
1-14×25
6×(5-3)12×(24+
6+
4)
17
×(125×34)
1
3
8
1
1
2
3
(5+
7)×7×5
(24+3)×24
6×(7-3)21×20
2
1
4
3
2
3
2
1
8
4
3×5×3
5
×7×5
5×4×4
(20+5)×5
(9+27)×27
2
7
3
3
6
1
2
5
5
5
6×(18×30)
(8-
8)×15
6×(7-3)
6×9+9×
1
6
7
6
2
7
5
3
6
6
13
×5-
13
×5
12
×6-
12×
6
21
×
20
25
×24
3
3
1
3
2
5
4
5
(5+7)×25
4×2+4×5
7-9×7
5
21
1
6
4
1
2
7
5
3
1-14×25
2+4×66×(5-3)12
×(24+6+4)
4
1
3
8
1
17×(125×34)
(5+
7)×7
×5