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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
[160-00]
(1)
2
5
p
×
(
−10
)
r
(2)
2
−4
x
×
5
z
(3)
−2
a
×
(
−4
)
a
(4)
3
9
x
×
2
y
(5)
3
u
×
(
−6
)
v
(6)
2
−2
u
×
5
w
(7)
10
a
×
4
c
(8)
2
3
p
×
8
p
(9)
2
−9
x
×
(
−7
)
x
(10)
3
−10
a
×
(
−3
)
b
(11)
3
−3
x
×
6
x
(12)
−10
x
×
(
−8
)
z
(13)
3
−2
x
×
10
x
(14)
2
−10
u
×
7
u
(15)
5
a
×
(
−3
)
a
(16)
−6
p
×
(
−5
)
q
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
5
p
×
(
−10
)
r
2
=
−50
p
r
(2)
2
−4
x
×
5
z
2
=
−20
x
z
(3)
−2
a
×
(
−4
)
a
2
=
8
a
(4)
3
9
x
×
2
y
3
=
18
x
y
(5)
3
u
×
(
−6
)
v
=
−18
u
v
(6)
2
−2
u
×
5
w
2
=
−10
u
w
(7)
10
a
×
4
c
=
40
a
c
(8)
2
3
p
×
8
p
3
=
24
p
(9)
2
−9
x
×
(
−7
)
x
3
=
63
x
(10)
3
−10
a
×
(
−3
)
b
3
=
30
a
b
(11)
3
−3
x
×
6
x
4
=
−18
x
(12)
−10
x
×
(
−8
)
z
=
80
x
z
(13)
3
−2
x
×
10
x
4
=
−20
x
(14)
2
−10
u
×
7
u
3
=
−70
u
(15)
5
a
×
(
−3
)
a
2
=
−15
a
(16)
−6
p
×
(
−5
)
q
=
30
p
q