简便运算练习题.doc

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1、第五节 简便运算第一种 (300+6)x12       25x(4+8)      125x(35+8)         (13+24)x8第二种84x101          504x25            78x102           25x204第三种99x64        99x16         638x99             999x99第四种99X13+13       25+199X25        32X16+14X32       78X4+78X3+78X3第五种125X32X8       25X32X125          88X

2、125            72X125                第六种3600÷25÷4    8100÷4÷75       3000÷125÷8      1250÷25÷5第七种1200-624-76        2100-728-772      273-73-27     847-527-273第八种278+463+22+37     732+580+268     1034+780320+102     425+14+186第九种214-（86+14）    787-（87-29）    365-（65+118）   455-（155+230）第十种576

3、-285+85     825-657+57     690-177+77      755-287+87第十一种871-299         157-99        363-199          968-599第十二种178X101-178    83X102-83X2      17X23-23X7   35X127-35X16-11X35第十三种64÷（8X2）            1000÷（125X4）第十四种375X（109-9）           456X（99+1）   126×6×8                    55×36＋64×55  

4、 755－122－78                 789×99（8＋80）×125               25×101 125×38＋125×30             （125＋16）×8    781×101－781                 25×16－25×1025×16×125                   25×32   234×80×5                    781－49979×16＋79×78＋79×6         79×99＋79800÷125                      4004×252000÷125

5、                     65＋93×65＋6×65  9999＋999＋99＋9              158+262+138 600÷25÷4                    (2130+783+270)+1017 600÷25                            125×18 375+219+381+225                       5001－247－1021－232(375+1034)+(966+125)                 99+999+9999+999993999+498            

6、                 1883－398   2356－（1356－721）                  75×27+19×2531×870+13×310                     4×(25×65+25×28)  容易出错类型（共五种类型）600-60÷15           736-35×20                 25×4÷25×498-18×5+25          56×8÷56×8               280-80÷4    175-75÷25           80-20×2+60                

7、36×9÷36×936-36÷6-6           25×8÷（25×8）           100+45-100+45          48×99+1             1000+8-1000+8              5+95×28102+1-102+1          65+35×13                  25+75-25+75         672-36+64           324-68+32