Hitunglah. 1. (+6) × (+5) 2. (-7) × (-8)

Hitunglah.
1. (+6) × (+5) 2. (-7) × (-8)
3. (+12) × (-3) 4. (-2) × (+10

Jawaban
(1) +30 (3) -36
(2) +56 (4) -20

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