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©2024 数学クラブ http://sugaku.club/
月 日( )
● 次の計算をしましょう
[160-00]
(1)
3
10
x
×
3
y
(2)
2
2
x
×
(
−8
)
x
(3)
3
7
x
×
(
−10
)
x
(4)
2
2
p
×
(
−5
)
r
(5)
10
p
×
(
−4
)
p
(6)
2
8
x
×
9
y
(7)
2
2
p
×
10
r
(8)
2
−5
u
×
(
−4
)
w
(9)
2
x
×
(
−6
)
x
(10)
2
−2
a
×
10
a
(11)
2
−3
u
×
(
−2
)
u
(12)
2
−6
p
×
10
p
(13)
−3
x
×
3
z
(14)
9
a
×
8
a
(15)
3
−3
x
×
10
y
(16)
−2
x
×
4
z
©2024 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
3
10
x
×
3
y
3
=
30
x
y
(2)
2
2
x
×
(
−8
)
x
3
=
−16
x
(3)
3
7
x
×
(
−10
)
x
4
=
−70
x
(4)
2
2
p
×
(
−5
)
r
2
=
−10
p
r
(5)
10
p
×
(
−4
)
p
2
=
−40
p
(6)
2
8
x
×
9
y
2
=
72
x
y
(7)
2
2
p
×
10
r
2
=
20
p
r
(8)
2
−5
u
×
(
−4
)
w
2
=
20
u
w
(9)
2
x
×
(
−6
)
x
2
=
−12
x
(10)
2
−2
a
×
10
a
3
=
−20
a
(11)
2
−3
u
×
(
−2
)
u
3
=
6
u
(12)
2
−6
p
×
10
p
3
=
−60
p
(13)
−3
x
×
3
z
=
−9
x
z
(14)
9
a
×
8
a
2
=
72
a
(15)
3
−3
x
×
10
y
3
=
−30
x
y
(16)
−2
x
×
4
z
=
−8
x
z