(1)12×(124-85)÷26
=12×39÷26
=468÷26
=18;
(2)536-36×12+78
=536-432+78
=104+78
=182;
(3)9.8+2.02-7.6
=11.82-7.7
=4.12;
(4)169÷13+87×11
=13+957
=970.
(1)12×(124-85)÷26
=12×39÷26
=468÷26
=18;
(2)536-36×12+78
=536-432+78
=104+78
=182;
(3)9.8+2.02-7.6
=11.82-7.7
=4.12;
(4)169÷13+87×11
=13+957
=970.