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©2018 数学クラブ http://sugaku.club/
月 日（ ）
● 次の計算をしましょう
[160-00]
(1)
3
8
u
×
8
v
(2)
3
−10
x
×
10
y
(3)
3
u
×
(
−3
)
u
(4)
−10
p
×
(
−7
)
p
(5)
3
−5
a
×
6
a
(6)
10
u
×
(
−8
)
u
(7)
−8
u
×
(
−5
)
v
(8)
3
9
u
×
9
v
(9)
3
u
×
(
−6
)
w
(10)
3
−4
p
×
6
p
(11)
3
4
p
×
(
−6
)
r
(12)
7
u
×
3
u
(13)
3
4
a
×
(
−7
)
a
(14)
−9
p
×
5
q
(15)
2
−8
p
×
10
q
(16)
−6
p
×
9
r
©2018 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
8
u
×
8
v
3
=
64
u
v
(2)
3
−10
x
×
10
y
3
=
−100
x
y
(3)
3
u
×
(
−3
)
u
2
=
−9
u
(4)
−10
p
×
(
−7
)
p
2
=
70
p
(5)
3
−5
a
×
6
a
4
=
−30
a
(6)
10
u
×
(
−8
)
u
2
=
−80
u
(7)
−8
u
×
(
−5
)
v
=
40
u
v
(8)
3
9
u
×
9
v
3
=
81
u
v
(9)
3
u
×
(
−6
)
w
=
−18
u
w
(10)
3
−4
p
×
6
p
4
=
−24
p
(11)
3
4
p
×
(
−6
)
r
3
=
−24
p
r
(12)
7
u
×
3
u
2
=
21
u
(13)
3
4
a
×
(
−7
)
a
4
=
−28
a
(14)
−9
p
×
5
q
=
−45
p
q
(15)
2
−8
p
×
10
q
2
=
−80
p
q
(16)
−6
p
×
9
r
=
−54
p
r