Ответ:\(8\cdot2=16\);\(24:3=8\);\(14:2=7\);\(3\cdot5=15\);\(42+18-40=60-40=20\);\(18+26+16=44+16=60\);\(80-34+16=46+16=62\);\(53+37-66=90-66=24\).