84 > 78; 50 < 64; 20 > 18; 8 · 4 − 4 = 28 > 12; 4 · 3 = 12 < 7 · 2 = 14; 39 + 19 = 58 > 56; 36 + 51 = 87 = 37 + 50; 95 − 92 = 3 > 10 : 5 = 2; 24 : 4 = 6 < 32 : 4 = 8.