［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
2
9
u
×
5
u
(2)
3
2
−3
a
×
(
−4
)
a
(3)
3
2
−2
x
y
×
(
−10
)
y
z
(4)
2
2
−3
p
×
(
−5
)
p
(5)
2
2
−10
p
q
×
3
q
(6)
2
3
−3
a
b
×
(
−3
)
a
b
(7)
3
2
5
a
×
8
a
(8)
2
2
−9
p
×
(
−6
)
p
(9)
3
−2
x
×
(
−8
)
x
(10)
3
3
−9
p
×
(
−10
)
p
(11)
6
a
b
×
(
−8
)
a
(12)
2
2
2
x
×
8
x
(13)
3
−3
a
b
×
9
a
(14)
3
3
−4
x
×
(
−9
)
x
(15)
3
2
2
u
v
×
(
−7
)
u
v
(16)
3
a
b
×
6
a
©2018 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
2
9
u
×
5
u
2
2
4
=
9
u
×
5
u
=
45
u
(2)
3
2
−3
a
×
(
−4
)
a
3
2
5
=
−3
a
×
(
−4
)
a
=
12
a
(3)
3
2
−2
x
y
×
(
−10
)
y
z
3
2
3
3
=
−2
x
y
×
(
−10
)
y
z
=
20
x
y
z
(4)
2
2
−3
p
×
(
−5
)
p
2
2
4
=
−3
p
×
(
−5
)
p
=
15
p
(5)
2
2
−10
p
q
×
3
q
2
2
2
3
=
−10
p
q
×
3
q
=
−30
p
q
(6)
2
3
−3
a
b
×
(
−3
)
a
b
2
3
4
3
=
−3
a
b
×
(
−3
)
a
b
=
9
a
b
(7)
3
2
5
a
×
8
a
3
2
5
=
5
a
×
8
a
=
40
a
(8)
2
2
−9
p
×
(
−6
)
p
2
2
4
=
−9
p
×
(
−6
)
p
=
54
p
(9)
3
−2
x
×
(
−8
)
x
3
4
=
−2
x
×
(
−8
)
x
=
16
x
(10)
3
3
−9
p
×
(
−10
)
p
3
3
6
=
−9
p
×
(
−10
)
p
=
90
p
(11)
6
a
b
×
(
−8
)
a
2
=
6
a
b
×
(
−8
)
a
=
−48
a
b
(12)
2
2
2
x
×
8
x
2
2
4
=
2
x
×
8
x
=
16
x
(13)
3
−3
a
b
×
9
a
3
4
=
−3
a
b
×
9
a
=
−27
a
b
(14)
3
3
−4
x
×
(
−9
)
x
3
3
6
=
−4
x
×
(
−9
)
x
=
36
x
(15)
3
2
2
u
v
×
(
−7
)
u
v
3
2
3
4
=
2
u
v
×
(
−7
)
u
v
=
−14
u
v
(16)
3
a
b
×
6
a
2
=
3
a
b
×
6
a
=
18
a
b