［文字サイズの変更］
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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
[161-00]
(1)
2
3
6
u
v
×
(
−10
)
u
(2)
3
8
x
×
5
x
(3)
3
2
−10
p
×
(
−5
)
p
(4)
2
2
9
u
×
(
−7
)
u
(5)
3
2
−5
u
×
(
−7
)
u
(6)
3
2
−2
p
×
(
−5
)
p
(7)
2
3
8
u
v
×
4
v
(8)
−6
u
v
×
(
−7
)
v
(9)
2
−10
x
y
×
(
−8
)
x
(10)
2
−8
p
×
2
p
(11)
3
4
a
b
×
(
−7
)
a
(12)
3
3
2
−4
a
b
×
(
−4
)
a
b
(13)
3
3
5
u
v
×
(
−7
)
u
(14)
2
10
p
×
(
−10
)
p
(15)
2
−2
p
q
×
6
q
(16)
3
2
−7
u
v
×
(
−6
)
v
©2018 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
3
6
u
v
×
(
−10
)
u
2
3
5
=
6
u
v
×
(
−10
)
u
=
−60
u
v
(2)
3
8
x
×
5
x
3
4
=
8
x
×
5
x
=
40
x
(3)
3
2
−10
p
×
(
−5
)
p
3
2
5
=
−10
p
×
(
−5
)
p
=
50
p
(4)
2
2
9
u
×
(
−7
)
u
2
2
4
=
9
u
×
(
−7
)
u
=
−63
u
(5)
3
2
−5
u
×
(
−7
)
u
3
2
5
=
−5
u
×
(
−7
)
u
=
35
u
(6)
3
2
−2
p
×
(
−5
)
p
3
2
5
=
−2
p
×
(
−5
)
p
=
10
p
(7)
2
3
8
u
v
×
4
v
2
3
2
4
=
8
u
v
×
4
v
=
32
u
v
(8)
−6
u
v
×
(
−7
)
v
2
=
−6
u
v
×
(
−7
)
v
=
42
u
v
(9)
2
−10
x
y
×
(
−8
)
x
2
3
=
−10
x
y
×
(
−8
)
x
=
80
x
y
(10)
2
−8
p
×
2
p
2
3
=
−8
p
×
2
p
=
−16
p
(11)
3
4
a
b
×
(
−7
)
a
3
4
=
4
a
b
×
(
−7
)
a
=
−28
a
b
(12)
3
3
2
−4
a
b
×
(
−4
)
a
b
3
3
2
5
4
=
−4
a
b
×
(
−4
)
a
b
=
16
a
b
(13)
3
3
5
u
v
×
(
−7
)
u
3
3
4
3
=
5
u
v
×
(
−7
)
u
=
−35
u
v
(14)
2
10
p
×
(
−10
)
p
2
3
=
10
p
×
(
−10
)
p
=
−100
p
(15)
2
−2
p
q
×
6
q
2
3
=
−2
p
q
×
6
q
=
−12
p
q
(16)
3
2
−7
u
v
×
(
−6
)
v
3
2
3
3
=
−7
u
v
×
(
−6
)
v
=
42
u
v