44 : 2 * 4;
88 : 44 * 36;
13 * 7 − 8 * 5;
18 * 4 + 6 * 4;
200 − (36 + 14);
700 − (83 + 17).
44 : 2 * 4 = (40 + 4) : 2 * 4 = (40 : 2 + 4 : 2) * 4 = (20 + 2) * 4 = 22 * 4 = 88
88 : 44 * 36 = 2 * 36 = 2 * (30 + 6) = 2 * 30 + 2 * 6 = 60 + 12 = 72
13 * 7 − 8 * 5 = (10 + 3) * 7 − 40 = (10 * 7 + 3 * 7) − 40 = (70 + 21) − 40 = 91 − 40 = 51
18 * 4 + 6 * 4 = (10 + 8) * 4 + 24 = (10 * 4 + 8 * 4) + 24 = (40 + 32) + 24 = 72 + 24 = 96
200 − (36 + 14) = 200 − 50 = 150
700 − (83 + 17) = 700 − 100 = 600