文档介绍：158+262+138
375+219+381+225
5002
(181+2564)+2719
378+44+114+242+222
276+228+353+219
(375+1
158+262+138
375+219+381+225
5002
(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-
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
2356-(1356-721)
1235-(1780-1665)
75×27+19×25
31×870+13×310
4×(25×65+25×28)
(1)(78+61)+39(2)700-82-18
(3)348+163+242+410+537
(4)125×47-47×25(5)201×316
(6)374-205+226-95(7)3000-999
(8)997×7+21(9)87×470+870×53
(10)(55+55+55+55×5)×125
(11)125×(8+40)×25(12)