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▼
▲
©2026 数学クラブ http://sugaku.club/
月 日( )
● √
a
の形に変形しなさい
[1N2-00]
(1)
7
7
×
(
−
)
(2)
7
−
4
(3)
2
4
(4)
2
−
6
(5)
7
8
×
(
−
)
(6)
3
4
(7)
2
8
(8)
5
6
(9)
5
5
(10)
7
9
(11)
7
5
(12)
2
10
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
7
7
×
(
−
)
2
7
×
7
=
−
343
=
−
(2)
7
−
4
2
4
×
7
=
−
112
=
−
(3)
2
4
2
2
4
1
8
=
=
(4)
2
−
6
2
2
6
1
18
=
−
=
−
(5)
7
8
×
(
−
)
2
8
×
7
=
−
448
=
−
(6)
3
4
3
2
4
3
16
=
=
(7)
2
8
2
2
8
1
32
=
=
(8)
5
6
2
6
×
5
=
180
=
(9)
5
5
2
5
×
5
=
125
=
(10)
7
9
7
2
9
7
81
=
=
(11)
7
5
2
5
×
7
=
175
=
(12)
2
10
2
10
×
2
=
200
=
(1)
343
−
(2)
112
−
(3)
1
8
(4)
1
18
−
(5)
448
−
(6)
3
16
(7)
1
32
(8)
180
(9)
125
(10)
7
81
(11)
175
(12)
200