Giải:
a) 126+-20+|124|--320-|-150|
=126-20+124+320-150
=(126+124-150)+(-20+320)
=100+300
=400
b) 43.35-52.23+197:195
=23.280-52.23+192
=8.(280-52)+361
=8.228+361
=1824+361
=2185
c) (13.174+4.174):173-(14.9-14.5):8
=[174.(13+4)]:173-[14.(9-5)]:8
=[174.17]:173-[14.4]:8
=175:173-56:8
=172-7
=289-7
=282
d) 132-[116-(132-128)2]
=132-[116-(4)2]
=132-[116-16]
=132-100
=32
e) 100:{250:[450-(4.53-22.25)]}
=100:{250:[450-(4.(125-25))]}
=100:{250:[450-(4.100)]}
=100:{250:[450-400]}
=100:{250:50}
=100:5
=20
f) -80-[-130-(12-4)2]+20080
=-80-[-130-(8)2]+1
=-80-[-130-64]+1
=-80-[-194]+1
=-80+194+1
=115
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