(1)24+37+26+43
=(24+26)+(37+43)
=50+80
=130
(2)134+254+46
=134+(254+46)
=134+300
=434
(3)314-76-24
=314-(76+24)
=314-100
=214
(4)76+147+24-47
=(76+24)+(147-47 )
=100+100
=200
(1)24+37+26+43
=(24+26)+(37+43)
=50+80
=130
(2)134+254+46
=134+(254+46)
=134+300
=434
(3)314-76-24
=314-(76+24)
=314-100
=214
(4)76+147+24-47
=(76+24)+(147-47 )
=100+100
=200