Ответ:
5·6=30; 8·5=40; 5·4=20.
5·9+5=45+5=50; 7·5+6=35+6=41; 3·5+8=15+8=23.
4·8−30=32−30=2; 9·3−12=27−12=15; 9·4+5=36+5=41.
25:5+10=5+10=15; 24:3+11=8+11=19; 18:3+24=6+24=30.
25−(24−8)=25−16=9; 40−(13+8)=40−21=19; 60−(27−4)=60−23=37; 35−(13−9)=35−4=31; 100−52=48; 100−65=35.
