Ответ:
54 : 9 = 6; 6 + 7 = 13; 13 · 5 = 65; 65 − 35 = 30.
189 − 98 = 91; 91 : 6 = 91/6; 91/6 · 4 = 182/3; 182/3 + 36 = 290/3 = 96⅔.
8 · 60 = 480; 480 − 200 = 280; 280 : 40 = 7; 7 + 98 = 105.
118 + 184 = 302; 302 · 4 = 1208; 1208 + 2600 = 3808; 3808 : 20 = 190,4.
Ответ: 1) 30; 2) 96⅔; 3) 105; 4) 190,4.
