［文字サイズの変更］
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©2019 数学クラブ http://sugaku.club/
月 日（ ）
● 次の計算をしましょう
[161-00]
(1)
3
−7
u
v
×
(
−9
)
u
(2)
2
3
−8
p
q
×
2
q
(3)
3
2
7
a
×
7
a
(4)
2
3
2
−10
p
q
×
(
−8
)
p
q
(5)
3
7
u
×
(
−7
)
u
(6)
3
2
a
b
×
(
−6
)
b
(7)
3
3
9
a
×
3
a
(8)
2
2
u
×
6
u
(9)
3
3
4
a
×
3
a
(10)
2
−7
p
q
×
(
−6
)
q
r
(11)
3
3
−8
a
b
×
(
−2
)
a
(12)
3
3
8
p
×
7
p
(13)
2
2
9
p
q
×
(
−2
)
q
(14)
2
3
−4
x
×
6
x
(15)
2
−6
x
y
×
(
−6
)
y
z
(16)
2
7
u
v
×
6
v
w
©2019 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
−7
u
v
×
(
−9
)
u
3
4
=
−7
u
v
×
(
−9
)
u
=
63
u
v
(2)
2
3
−8
p
q
×
2
q
2
3
2
4
=
−8
p
q
×
2
q
=
−16
p
q
(3)
3
2
7
a
×
7
a
3
2
5
=
7
a
×
7
a
=
49
a
(4)
2
3
2
−10
p
q
×
(
−8
)
p
q
2
3
2
4
4
=
−10
p
q
×
(
−8
)
p
q
=
80
p
q
(5)
3
7
u
×
(
−7
)
u
3
4
=
7
u
×
(
−7
)
u
=
−49
u
(6)
3
2
a
b
×
(
−6
)
b
3
3
2
=
2
a
b
×
(
−6
)
b
=
−12
a
b
(7)
3
3
9
a
×
3
a
3
3
6
=
9
a
×
3
a
=
27
a
(8)
2
2
u
×
6
u
2
3
=
2
u
×
6
u
=
12
u
(9)
3
3
4
a
×
3
a
3
3
6
=
4
a
×
3
a
=
12
a
(10)
2
−7
p
q
×
(
−6
)
q
r
2
3
=
−7
p
q
×
(
−6
)
q
r
=
42
p
q
r
(11)
3
3
−8
a
b
×
(
−2
)
a
3
3
4
3
=
−8
a
b
×
(
−2
)
a
=
16
a
b
(12)
3
3
8
p
×
7
p
3
3
6
=
8
p
×
7
p
=
56
p
(13)
2
2
9
p
q
×
(
−2
)
q
2
2
2
3
=
9
p
q
×
(
−2
)
q
=
−18
p
q
(14)
2
3
−4
x
×
6
x
2
3
5
=
−4
x
×
6
x
=
−24
x
(15)
2
−6
x
y
×
(
−6
)
y
z
2
3
=
−6
x
y
×
(
−6
)
y
z
=
36
x
y
z
(16)
2
7
u
v
×
6
v
w
2
3
=
7
u
v
×
6
v
w
=
42
u
v
w