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1、__________________________________________________常用勾股数3,4,55,12,136,8,107,24,258,15,179,12,159,40,4110,24,2611,60,6112,16,2012,35,3713,84,8514,48,5015,20,2515,36,3916,30,3416,63,6518,24,3018,80,8220,21,2920,48,5221,28,3521,72,7524,32,4024,45,5124,70,7425,60,6527,3
2、6,4528,45,5328,96,10030,40,5030,72,7832,60,6833,44,5533,56,65常用平方数112=121122=144132=169142=196152=225162=256172=289182=324192=361202=400302=900402=1600502=2500152=225252=625352=1225452=2025552=3025652=4225常用立方数13=123=833=2743=6453=12563=21673=34383=51293=729圆周率常取数据
3、3.14×1＝3.143.14×2＝6.283.14×3＝9.423.14×4＝12.56常用特殊数的乘积25×3＝7525×4＝10025×8＝200125×3＝375125×4＝500125×8＝1000625×16＝1000037×3=111关于常用分数与小数的互化：1/2=0.51/4=0.253/4=0.751/5=0.22/5=0.43/5=0.64/5=0.81/8=0.1253/8=0.3755/8=0.6257/8=0.8751/20=0.053/20=0.157/20=0.359/20=0.4511/20
4、=0.551/25=0.042/25=0.083/25=0.124/25=0.166/25=0.24常见的根号数的近似值√2=1.414√3=1.732√5=2.236√7=2.645√11=3.317那么，√6=√2*√3√8=2√2√10=√2*√5√105=√3*√5*√7狼狈:指困顿窘迫；比喻彼此勾结。收集于网络，如有侵权请联系管理员删除__________________________________________________众人帮是一款互帮互助的应用平台；发订单、自由接单；交友、互助、爱心传递李会军竞聘工
5、作方案竞聘岗位：项目四部副职收集于网络，如有侵权请联系管理员删除
