158+262+138 
375+219+381+225 
5001-247-1021-232 
(181+2564)+2719 
378+44+114+242+222 
276+228+353+219 
(375+1034)+(966+125) 
(2130+783+270)+1017 
99+999+9999+99999 
7755-(2187+755) 
2214+638+286 
3065-738-1065 
899+344 
2357-183-317-357 
2365-1086-214 
497-299 
2370+1995 
3999+498 
1883-398 
12×25 
75×24 
138×25×4 
(13×125)×(3×8) 
(12+24+80)×50 
704×25 
25×32×125 
32×(25+125) 
88×125 
102×76 
58×98 
178×101-178 
84×36+64×84 
75×99+2×75 
83×102-83×2 
98×199 
123×18-123×3+85×123 
50×(34×4)×3 
25×(24+16) 
178×99+178 
79×42+79+79×57 
7300÷25÷4 
8100÷4÷75 
16800÷120 
30100÷2100 
32000÷400 
49700÷700 
1248÷24 
3150÷15 
4800÷25 
21500÷125 
附加题: 
2356-(1356-721) 
1235-(1780-1665) 
75×27+19×2 5 
31×870+13×310 
4×(25×65+25×28)
