四年级数学上册第三单元简便计算练习题 一、简便计算练习题,153+262+138,1,375+219+381+225,52535165,（181+264）+219,378+44+222,276+228+24+272,775(218+75),221+38+162,30638262,23518317,234-55-45,279-73-127,273-128-62,389-（89+215）,679-（213+79）,578176324,123+285+177,4 1225,125 168,4825125,12588（两种方法）,38250,52162,2536,2544（两种方法）,1356+656,99 53+53,47 99+47,36 29+36,3537+6537,7527+2527,3810138,162+163+165,178101178,8436+6484,7589+1175,17899+178,3783+1737,19103193,9938+38,2341+5923,3841+5938,5899+58,138727238,2383+1723,2,42103423,25624,9938+38,125438,（40+4）25,（8+6）125,（80+8）125,36（30+3）,25（8+40）,125（8+4）,6399,36101,28201,18199,6811,38102,3598,57101,46101,3799,25364,（25+4）40,3657+3643,45 99+45,27102-272,1699,37101,53+262+38,100254,4800254,560008125,2300502,3537+6537,7527+2527,3810138,162+163+165,12572,2516,12564,2512548,221+38+162,1356+656,99 53+53,47 99+47,