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©2026 数学クラブ http://sugaku.club/
月 日( )
● 次の式を計算しなさい
[1A0-00]
(1)
6
(
2
p
+
9
)
(2)
2
(
3
x
y
+
4
x
)
x
(3)
10
(
3
a
b
+
7
a
)
a
(4)
2
(
6
a
+
8
)
(5)
6
(
10
p
−
6
q
−
1
)
(6)
5
(
6
a
b
−
8
a
)
a
(7)
6
y
(
2
x
−
2
)
(8)
2
(
3
u
+
5
)
(9)
2
(
8
x
+
5
)
(10)
8
(
8
u
v
+
10
u
)
u
(11)
7
(
p
q
+
2
p
)
÷
p
(12)
5
b
(
10
a
+
8
)
(13)
4
a
b
−
9
a
9
a
(14)
2
q
(
5
p
+
5
)
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
6
(
2
p
+
9
)
=
12
p
+
54
(2)
2
(
3
x
y
+
4
x
)
x
=
6
y
+
8
(3)
10
(
3
a
b
+
7
a
)
a
=
30
b
+
70
(4)
2
(
6
a
+
8
)
=
12
a
+
16
(5)
6
(
10
p
−
6
q
−
1
)
=
60
p
−
36
q
−
6
(6)
5
(
6
a
b
−
8
a
)
a
=
30
b
−
40
(7)
6
y
(
2
x
−
2
)
=
12
x
y
−
12
y
(8)
2
(
3
u
+
5
)
=
6
u
+
10
(9)
2
(
8
x
+
5
)
=
16
x
+
10
(10)
8
(
8
u
v
+
10
u
)
u
=
64
v
+
80
(11)
7
(
p
q
+
2
p
)
÷
p
=
7
q
+
14
(12)
5
b
(
10
a
+
8
)
=
50
a
b
+
40
b
(13)
4
a
b
−
9
a
9
a
=
36
b
−
81
(14)
2
q
(
5
p
+
5
)
=
10
p
q
+
10
q