简便计算练习题
70425=
98199=
12318=
88125=
10276=
5898=
497-299=
2370+1995=
3999+498=
1883-398=
1225=
7524=
16800120=
301002100=
32000400=
21500125=
49700700=
124824=
315015=
480025=
2532125=
32(25+125)=
178101-178=
8436+6484=
7599+275=
83102-832=
1233+85123=
50(344)3=
25(24+16)=
17899+178=
7942+79+7957=
7300254=
8100475=
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=
2357-183-317-357=
2365-1086-214=
138254=
(13125)(38)=
(12+24+80)50=