3. Вычисли: 90 : 3, 34 · 2, 20 · 5, 55 : 5, 60 : 30, 48 : 3.

\(90 : 3 = \mathbf{30}\)

\(34 \cdot 2 = \mathbf{68}\)

\(20 \cdot 5 = \mathbf{100}\)

\(55 : 5 = \mathbf{11}\)

\(60 : 30 = \mathbf{2}\)

\(48 : 3 = \mathbf{16}\)

Ответ: 30; 68; 100; 11; 2; 16.