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©2025 数学クラブ http://sugaku.club/
月 日( )
● 次の計算をしましょう
[161-00]
(1)
2
3
−7
x
×
6
x
(2)
2
2
−2
p
×
5
p
(3)
2
−5
a
b
×
9
a
b
(4)
3
−5
p
q
×
(
−7
)
p
q
(5)
2
3
−6
p
q
×
(
−8
)
q
(6)
2
5
u
v
×
6
v
(7)
3
3
−3
a
×
(
−2
)
a
(8)
3
3
−10
u
v
×
(
−3
)
v
(9)
2
3
−3
x
×
5
x
(10)
2
2
−10
u
×
(
−8
)
u
(11)
3
5
x
y
×
(
−7
)
y
z
(12)
4
x
y
×
(
−3
)
y
(13)
3
3
3
7
x
y
×
4
y
z
(14)
2
3
3
x
×
(
−4
)
x
(15)
3
2
2
a
×
(
−9
)
a
(16)
3
3
3
6
u
v
×
(
−6
)
v
w
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
3
−7
x
×
6
x
2
3
5
=
−7
x
×
6
x
=
−42
x
(2)
2
2
−2
p
×
5
p
2
2
4
=
−2
p
×
5
p
=
−10
p
(3)
2
−5
a
b
×
9
a
b
2
3
2
=
−5
a
b
×
9
a
b
=
−45
a
b
(4)
3
−5
p
q
×
(
−7
)
p
q
3
4
2
=
−5
p
q
×
(
−7
)
p
q
=
35
p
q
(5)
2
3
−6
p
q
×
(
−8
)
q
2
3
2
4
=
−6
p
q
×
(
−8
)
q
=
48
p
q
(6)
2
5
u
v
×
6
v
2
2
2
=
5
u
v
×
6
v
=
30
u
v
(7)
3
3
−3
a
×
(
−2
)
a
3
3
6
=
−3
a
×
(
−2
)
a
=
6
a
(8)
3
3
−10
u
v
×
(
−3
)
v
3
3
3
4
=
−10
u
v
×
(
−3
)
v
=
30
u
v
(9)
2
3
−3
x
×
5
x
2
3
5
=
−3
x
×
5
x
=
−15
x
(10)
2
2
−10
u
×
(
−8
)
u
2
2
4
=
−10
u
×
(
−8
)
u
=
80
u
(11)
3
5
x
y
×
(
−7
)
y
z
3
4
=
5
x
y
×
(
−7
)
y
z
=
−35
x
y
z
(12)
4
x
y
×
(
−3
)
y
2
=
4
x
y
×
(
−3
)
y
=
−12
x
y
(13)
3
3
3
7
x
y
×
4
y
z
3
3
3
3
6
=
7
x
y
×
4
y
z
=
28
x
y
z
(14)
2
3
3
x
×
(
−4
)
x
2
3
5
=
3
x
×
(
−4
)
x
=
−12
x
(15)
3
2
2
a
×
(
−9
)
a
3
2
5
=
2
a
×
(
−9
)
a
=
−18
a
(16)
3
3
3
6
u
v
×
(
−6
)
v
w
3
3
3
3
6
=
6
u
v
×
(
−6
)
v
w
=
−36
u
v
w