1. 4 · 5 6 · 4

Решение: $$4 \cdot 5 = 20$$ $$6 \cdot 4 = 24$$ $$4 \cdot 7 + 4 = 28 + 4 = 32$$ $$4 \cdot 8 = 32$$ $$4 \cdot 3 + 4 = 12 + 4 = 16$$ $$4 \cdot 4 = 16$$ $$4 \cdot 8 = 32$$ $$4 \cdot 9 - 4 = 36 - 4 = 32$$ Ответ: 20, 24, 32, 32, 16, 16, 32, 32