400-(325+25)=50
152+(89+111)=352
(256+257)-33=480
569+(109+211)=889
(652-526)•1=126
(903-254)•0=0
(401-399)•2=4
500-(358+42)=100
1000-(2•3+5)=989
5•2+(220-30)•0=10
(247-240):7+999=1000
4•2+2•(101-100)=10
400-(325+25)=50
152+(89+111)=352
(256+257)-33=480
569+(109+211)=889
(652-526)•1=126
(903-254)•0=0
(401-399)•2=4
500-(358+42)=100
1000-(2•3+5)=989
5•2+(220-30)•0=10
(247-240):7+999=1000
4•2+2•(101-100)=10