乗法

[0] (+5) ✕ (-8) =

-40

[1] (-8) ✕ (+9) =

-72

[2] (-4) ✕ (+2) =

-8

[3] (+8) ✕ (-8) =

-64

[4] (-5) ✕ (+7) =

-35

[5] (-4) ✕ (+5) =

-20

[6] (-4) ✕ (-6) =

+24

[7] (-9) ✕ (-4) =

+36

[8] (+5) ✕ (+2) =

+10

[9] (+6) ✕ (-8) =

-48




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