Вычисли значения выражений.
20 * 5;
40 * 2;
30 * 3;
20 * 2;
20 * 4;
30 * 2;
20 * 3;
50 * 2;
(30 + 20) * 2;
(10 + 30) * 2;
(70 − 50) * 5;
(90 − 60) * 3;
6 * 3;
2 * 8;
18 : 9;
12 : 4.
20 * 5 = 4;
40 * 2 = 80;
30 * 3 = 90;
20 * 2 = 40;
20 * 4 = 80;
30 * 2 = 60;
20 * 3 = 60;
50 * 2 = 100;
(30 + 20) * 2 = 50 * 2 = 100;
(10 + 30) * 2 = 40 * 2 = 80;
(70 − 50) * 5 = 20 * 5 = 100;
(90 − 60) * 3 = 30 * 3 = 90;
6 * 3 = 18;
2 * 8 = 16;
18 : 9 = 2;
12 : 4 = 3.