$70 \overset{2}{-} 27 \overset{1}{*} 2 \overset{3}{+} 19 = 35$
$3 \overset{1}{*} 12 \overset{3}{-} 65 \overset{2}{:} 5 = 23$
$24 \overset{2}{:} (90 \overset{1}{-} 82) \overset{3}{+} 67 = 70$
$42 \overset{2}{:} (71 \overset{1}{-} 64) \overset{3}{*} 8 = 48$

Вычисления
$70 \overset{2}{-} 27 \overset{1}{*} 2 \overset{3}{+} 19 = 35$
1) 27 * 2 = (20 + 7) * 2 = 20 * 2 + 7 * 2 = 40 + 14 = 54
2) 70 − 54 = 16
3) 16 + 19 = 35
 
$3 \overset{1}{*} 12 \overset{3}{-} 65 \overset{2}{:} 5 = 23$
1) 3 * 12 = 3 * (10 + 2) = 3 * 10 + 3 * 2 = 30 + 6 = 36
2) 65 : 5 = (50 + 15) : 5 = 50 : 5 + 15 : 5 = 10 + 3 = 13
3) 36 − 13 = 23
 
$24 \overset{2}{:} (90 \overset{1}{-} 82) \overset{3}{+} 67 = 70$
1) 90 − 82 = 8
2) 24 : 8 = 3
3) 3 + 67 = 70
 
$42 \overset{2}{:} (71 \overset{1}{-} 64) \overset{3}{*} 8 = 48$
1) 71 − 64 = 7
2) 42 : 7 = 6
3) 6 * 8 = 48