2. Вычисли: 3 × 5; 2 × 4; 4 × 8; 7 × 2; 16 : 2; 21 : 3; 30 : 10; 15 : 3.

3 × 5 = 15;

2 × 4 = 8;

4 × 8 = 32;

7 × 2 = 14;

16 : 2 = 8;

21 : 3 = 7;

30 : 10 = 3;

15 : 3 = 5.

Ответ: 15; 8; 32; 14; 8; 7; 3; 5.