Kerjakan soal berikut. 1. (+9) × (+4) 2. (+6) × (-7) 3. (-5) × (+10) 4. (-13) × (-2)
Kerjakan soal berikut.
1. (+9) × (+4)
2. (+6) × (-7)
3. (-5) × (+10)
4. (-13) × (-2)
5. (+2/5) × (-15)
6. (-3/4) × (-7/12)
Pembahasan:
1. (+9) × (+4) = 9 × 4 = 36
2. (+6) × (-7) = -(6 × 7) = -42
3. (-5) × (+10) = -(5 × 10) = -50
4. (-13) × (-2) = 13 × 2 = 26
5. (+2/5) × (-15) = -(2/5 × 15) = -6
6. (-3/4) × (-7/12) = 3/4 × 7/12 = 7/16
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