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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 次の計算をしましょう
[160-00]
(1)
3
−5
u
×
(
−5
)
u
(2)
3
7
p
×
5
r
(3)
10
u
×
3
u
(4)
−5
u
×
(
−10
)
v
(5)
−7
a
×
9
c
(6)
−7
u
×
6
w
(7)
3
−5
p
×
(
−9
)
p
(8)
7
p
×
8
q
(9)
2
−10
x
×
9
x
(10)
3
−5
p
×
5
q
(11)
3
5
p
×
(
−10
)
p
(12)
3
a
×
(
−8
)
b
(13)
−2
p
×
(
−4
)
p
(14)
3
−9
p
×
(
−9
)
r
(15)
5
a
×
(
−5
)
c
(16)
2
8
x
×
8
y
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
−5
u
×
(
−5
)
u
4
=
25
u
(2)
3
7
p
×
5
r
3
=
35
p
r
(3)
10
u
×
3
u
2
=
30
u
(4)
−5
u
×
(
−10
)
v
=
50
u
v
(5)
−7
a
×
9
c
=
−63
a
c
(6)
−7
u
×
6
w
=
−42
u
w
(7)
3
−5
p
×
(
−9
)
p
4
=
45
p
(8)
7
p
×
8
q
=
56
p
q
(9)
2
−10
x
×
9
x
3
=
−90
x
(10)
3
−5
p
×
5
q
3
=
−25
p
q
(11)
3
5
p
×
(
−10
)
p
4
=
−50
p
(12)
3
a
×
(
−8
)
b
=
−24
a
b
(13)
−2
p
×
(
−4
)
p
2
=
8
p
(14)
3
−9
p
×
(
−9
)
r
3
=
81
p
r
(15)
5
a
×
(
−5
)
c
=
−25
a
c
(16)
2
8
x
×
8
y
2
=
64
x
y