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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
a
×
2
a
(2)
3
−4
a
×
(
−5
)
a
(3)
2
p
×
10
r
(4)
2
−9
u
×
(
−6
)
u
(5)
3
−7
p
×
5
q
(6)
10
u
×
8
u
(7)
−6
a
×
6
c
(8)
3
8
u
×
9
u
(9)
2
−10
p
×
(
−8
)
q
(10)
4
x
×
(
−9
)
x
(11)
−3
u
×
9
w
(12)
2
−3
x
×
3
x
(13)
2
−3
p
×
3
r
(14)
7
a
×
(
−8
)
a
(15)
10
x
×
9
y
(16)
−6
a
×
10
b
©2024 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
3
−10
a
×
2
a
4
=
−20
a
(2)
3
−4
a
×
(
−5
)
a
4
=
20
a
(3)
2
p
×
10
r
=
20
p
r
(4)
2
−9
u
×
(
−6
)
u
3
=
54
u
(5)
3
−7
p
×
5
q
3
=
−35
p
q
(6)
10
u
×
8
u
2
=
80
u
(7)
−6
a
×
6
c
=
−36
a
c
(8)
3
8
u
×
9
u
4
=
72
u
(9)
2
−10
p
×
(
−8
)
q
2
=
80
p
q
(10)
4
x
×
(
−9
)
x
2
=
−36
x
(11)
−3
u
×
9
w
=
−27
u
w
(12)
2
−3
x
×
3
x
3
=
−9
x
(13)
2
−3
p
×
3
r
2
=
−9
p
r
(14)
7
a
×
(
−8
)
a
2
=
−56
a
(15)
10
x
×
9
y
=
90
x
y
(16)
−6
a
×
10
b
=
−60
a
b