［文字サイズの変更］
▼
▲
©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 次の計算をしましょう
[161-00]
(1)
3
2
−7
a
b
×
9
b
c
(2)
2
2
7
u
×
7
u
(3)
3
10
a
b
×
(
−6
)
b
(4)
3
3
−5
p
q
×
5
q
r
(5)
3
3
−3
a
b
×
(
−2
)
a
b
(6)
2
2
−9
u
×
10
u
(7)
2
2
3
x
y
×
(
−6
)
x
y
(8)
3
3
3
x
×
5
x
(9)
2
10
u
v
×
(
−5
)
u
(10)
2
3
2
2
x
y
×
(
−9
)
x
y
(11)
3
2
−10
x
×
(
−7
)
x
(12)
2
5
u
v
×
7
u
v
(13)
3
3
3
9
x
y
×
9
x
y
(14)
2
2
2
p
×
4
p
(15)
2
−3
x
y
×
6
y
(16)
3
3
2
x
×
(
−10
)
x
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
2
−7
a
b
×
9
b
c
3
2
5
=
−7
a
b
×
9
b
c
=
−63
a
b
c
(2)
2
2
7
u
×
7
u
2
2
4
=
7
u
×
7
u
=
49
u
(3)
3
10
a
b
×
(
−6
)
b
3
3
2
=
10
a
b
×
(
−6
)
b
=
−60
a
b
(4)
3
3
−5
p
q
×
5
q
r
3
3
3
4
=
−5
p
q
×
5
q
r
=
−25
p
q
r
(5)
3
3
−3
a
b
×
(
−2
)
a
b
3
3
4
4
=
−3
a
b
×
(
−2
)
a
b
=
6
a
b
(6)
2
2
−9
u
×
10
u
2
2
4
=
−9
u
×
10
u
=
−90
u
(7)
2
2
3
x
y
×
(
−6
)
x
y
2
2
3
3
=
3
x
y
×
(
−6
)
x
y
=
−18
x
y
(8)
3
3
3
x
×
5
x
3
3
6
=
3
x
×
5
x
=
15
x
(9)
2
10
u
v
×
(
−5
)
u
2
3
=
10
u
v
×
(
−5
)
u
=
−50
u
v
(10)
2
3
2
2
x
y
×
(
−9
)
x
y
2
3
2
4
4
=
2
x
y
×
(
−9
)
x
y
=
−18
x
y
(11)
3
2
−10
x
×
(
−7
)
x
3
2
5
=
−10
x
×
(
−7
)
x
=
70
x
(12)
2
5
u
v
×
7
u
v
2
3
2
=
5
u
v
×
7
u
v
=
35
u
v
(13)
3
3
3
9
x
y
×
9
x
y
3
3
3
6
4
=
9
x
y
×
9
x
y
=
81
x
y
(14)
2
2
2
p
×
4
p
2
2
4
=
2
p
×
4
p
=
8
p
(15)
2
−3
x
y
×
6
y
2
2
2
=
−3
x
y
×
6
y
=
−18
x
y
(16)
3
3
2
x
×
(
−10
)
x
3
3
6
=
2
x
×
(
−10
)
x
=
−20
x