5. Вычисли: 72+6; 69+3; 37+8; 45+9; 27−5; 36−8; 47+20; 32+40; 60−7; 90−6; 85−30; 83−60.

\(72+6=78\)

\(69+3=72\)

\(37+8=45\)

\(45+9=54\)

\(27-5=22\)

\(36-8=28\)

\(47+20=67\)

\(32+40=72\)

\(60-7=53\)

\(90-6=84\)

\(85-30=55\)

\(83-60=23\)

Ответ: 78; 72; 45; 54; 22; 28; 67; 72; 53; 84; 55; 23.