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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)
−8
x
×
5
z
(2)
3
−3
x
×
5
x
(3)
3
3
u
×
4
w
(4)
−6
u
×
(
−5
)
u
(5)
−7
a
×
6
b
(6)
3
x
×
(
−9
)
z
(7)
2
7
a
×
(
−3
)
b
(8)
−4
a
×
9
a
(9)
2
−3
p
×
8
q
(10)
3
4
x
×
7
x
(11)
−6
x
×
(
−2
)
y
(12)
2
−4
a
×
6
c
(13)
3
−10
x
×
2
z
(14)
10
x
×
(
−7
)
z
(15)
3
8
x
×
(
−4
)
z
(16)
4
a
×
4
a
©2024 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
−8
x
×
5
z
=
−40
x
z
(2)
3
−3
x
×
5
x
4
=
−15
x
(3)
3
3
u
×
4
w
3
=
12
u
w
(4)
−6
u
×
(
−5
)
u
2
=
30
u
(5)
−7
a
×
6
b
=
−42
a
b
(6)
3
x
×
(
−9
)
z
=
−27
x
z
(7)
2
7
a
×
(
−3
)
b
2
=
−21
a
b
(8)
−4
a
×
9
a
2
=
−36
a
(9)
2
−3
p
×
8
q
2
=
−24
p
q
(10)
3
4
x
×
7
x
4
=
28
x
(11)
−6
x
×
(
−2
)
y
=
12
x
y
(12)
2
−4
a
×
6
c
2
=
−24
a
c
(13)
3
−10
x
×
2
z
3
=
−20
x
z
(14)
10
x
×
(
−7
)
z
=
−70
x
z
(15)
3
8
x
×
(
−4
)
z
3
=
−32
x
z
(16)
4
a
×
4
a
2
=
16
a