Частина 1. Номер 22
Виконайте дії.
20 + 30 = 50;
60 – 30 = 20;
52 + 21 = 73;
75 – 31 = 44;
52 – 30 = 22;
48 – 20 = 28;
53 + 34 = 87;
47 + 32 = 79;
27 + 31 = 58;
45 + 30 = 75;
59 – 45 = 14;
95 – 13 = 82.
Виконайте дії.
20 + 30 = 50;
60 – 30 = 20;
52 + 21 = 73;
75 – 31 = 44;
52 – 30 = 22;
48 – 20 = 28;
53 + 34 = 87;
47 + 32 = 79;
27 + 31 = 58;
45 + 30 = 75;
59 – 45 = 14;
95 – 13 = 82.