乗法
[0]
(+7) ✕ (-5)
=
答え
ｘ
-35
[1]
(-3) ✕ (+3)
=
答え
ｘ
-9
[2]
(+6) ✕ (+4)
=
答え
ｘ
+24
[3]
(+7) ✕ (+4)
=
答え
ｘ
+28
[4]
(+5) ✕ (-9)
=
答え
ｘ
-45
[5]
(-5) ✕ (-4)
=
答え
ｘ
+20
[6]
(-4) ✕ (-5)
=
答え
ｘ
+20
[7]
(+5) ✕ (-8)
=
答え
ｘ
-40
[8]
(+2) ✕ (+7)
=
答え
ｘ
+14
[9]
(+4) ✕ (-8)
=
答え
ｘ
-32
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