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▲
©2018 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
2
2
(
−
4
)
(2)
20
125
5
(
＋
)
(3)
75
3
3
(
＋
)
(4)
3
27
2
(
＋
)
(5)
2
2
(
−7
＋
)
(6)
2
7
18
(
＋
)
(7)
2
2
7
(
＋
)
(8)
12
3
(
＋
1
)
(9)
27
27
(
＋
9
)
(10)
7
28
(
−2
＋
)
©2018 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
2
(
−
4
)
2
=
2
−
4
2
=
2
−
4
(2)
20
125
5
(
＋
)
5
5
5
=
2
(
5
＋
)
=
10
×
5
＋
2
×
5
=
60
(3)
75
3
3
(
＋
)
3
3
3
=
5
(
＋
)
=
5
×
3
＋
5
×
3
=
30
(4)
3
27
2
(
＋
)
3
3
2
=
(
3
＋
)
6
=
3
×
3
＋
6
=
9
＋
(5)
2
2
(
−7
＋
)
2
=
−7
＋
2
2
=
−7
＋
2
(6)
2
7
18
(
＋
)
2
7
2
=
(
＋
3
)
14
=
＋
3
×
2
14
=
＋
6
(7)
2
2
7
(
＋
)
14
=
2
＋
14
=
2
＋
(8)
12
3
(
＋
1
)
3
3
=
2
(
＋
1
)
3
=
2
×
3
＋
2
3
=
6
＋
2
(9)
27
27
(
＋
9
)
3
3
=
3
(
3
＋
9
)
3
=
9
×
3
＋
27
3
=
27
＋
27
(10)
7
28
(
−2
＋
)
7
7
=
(
−2
＋
2
)
7
=
−2
＋
2
×
7
7
=
−2
＋
14