初二必背平方根1到100如下：
1、√0=0（表示根号0等于0，下同）；√1=1；√2=1.4142135623731；√3=1.73205080756888；
2、√4=2；√5=2.23606797749979；√6=2.44948974278318；√7=2.64575131106459；
3、√8=2.82842712474619；√9=3；√10=3.16227766016838；√11=3.3166247903554；√12=3.46410161513775；
4、√13=3.60555127546399√14=3.74165738677394；√15=3.87298334620742；√16=4，
5、√17=4.12310562561766；√18=4.24264068711928；√19=4.35889894354067；√20=4.47213595499958；
6、√21=4.58257569495584；√22=4.69041575982343；√23=4.79583152331272；√24=4.89897948556636；
7、√25=5；√26=5.09901951359278；√27=5.19615242270663；√28=5.29150262212918；
8、√29=5.3851648071345；√30=5.47722557505166；√31=5.56776436283002；√32=5.65685424949238；
9、√33=5.74456264653803；√34=5.8309518948453；√35=5.91607978309962‘’√36=6；√37=6.08276253029822，
10、√38=6.16441400296898；√39=6.2449979983984；√40=6.32455532033676；√41=6.40312423743285
11、√42=6.48074069840786；√43=6.557438524302；√44=6.6332495807108；√45=6.70820393249937
12、√46=6.78232998312527；√47=6.85565460040104；√48=6.92820323027551；√49=7
13、√50=7.07106781186548；√51=7.14142842854285；√52=7.21110255092798；√53=7.28010988928052
14、√54=7.34846922834953；√55=7.41619848709566；√56=7.48331477354788；√57=7.54983443527075
15、√58=7.61577310586391；√59=7.68114574786861；√60=7.74596669241483；√61=7.81024967590665
16、√62=7.87400787401181；√63=7.93725393319377；√64=8；√65=8.06225774829855；√66=8.12403840463596
17、√67=8.18535277187245；√68=8.24621125123532；√69=8.30662386291807；√70=8.36660026534076
18、√71=8.42614977317636；√72=8.48528137423857；√73=8.54400374531753；√74=8.60232526704263，
19、√75=8.66025403784439；√76=8.71779788708135；√77=8.77496438739212；√78=8.83176086632785
20、√79=8.88819441731559；√80=8.94427190999916；√81=9；√82=9.05538513813742；√83=9.1104335791443
21、√84=9.16515138991168；√85=9.21954445729289；√86=9.2736184954957；√87=9.32737905308882
22、√88=9.38083151964686；√89=9.4339811320566；√90=9.48683298050514；√91=9.53939201416946
23、√92=9.59166304662544；√93=9.64365076099295；√94=9.69535971483266；√95=9.74679434480896
24、√96=9.79795897113271；√97=9.8488578017961；√98=9.89949493661167；√99=9.9498743710662；√100=10。
1、√0=0（表示根号0等于0，下同）；√1=1；√2=1.4142135623731；√3=1.73205080756888；
2、√4=2；√5=2.23606797749979；√6=2.44948974278318；√7=2.64575131106459；
3、√8=2.82842712474619；√9=3；√10=3.16227766016838；√11=3.3166247903554；√12=3.46410161513775；
4、√13=3.60555127546399√14=3.74165738677394；√15=3.87298334620742；√16=4，
5、√17=4.12310562561766；√18=4.24264068711928；√19=4.35889894354067；√20=4.47213595499958；
6、√21=4.58257569495584；√22=4.69041575982343；√23=4.79583152331272；√24=4.89897948556636；
7、√25=5；√26=5.09901951359278；√27=5.19615242270663；√28=5.29150262212918；
8、√29=5.3851648071345；√30=5.47722557505166；√31=5.56776436283002；√32=5.65685424949238；
9、√33=5.74456264653803；√34=5.8309518948453；√35=5.91607978309962‘’√36=6；√37=6.08276253029822，
10、√38=6.16441400296898；√39=6.2449979983984；√40=6.32455532033676；√41=6.40312423743285
11、√42=6.48074069840786；√43=6.557438524302；√44=6.6332495807108；√45=6.70820393249937
12、√46=6.78232998312527；√47=6.85565460040104；√48=6.92820323027551；√49=7
13、√50=7.07106781186548；√51=7.14142842854285；√52=7.21110255092798；√53=7.28010988928052
14、√54=7.34846922834953；√55=7.41619848709566；√56=7.48331477354788；√57=7.54983443527075
15、√58=7.61577310586391；√59=7.68114574786861；√60=7.74596669241483；√61=7.81024967590665
16、√62=7.87400787401181；√63=7.93725393319377；√64=8；√65=8.06225774829855；√66=8.12403840463596
17、√67=8.18535277187245；√68=8.24621125123532；√69=8.30662386291807；√70=8.36660026534076
18、√71=8.42614977317636；√72=8.48528137423857；√73=8.54400374531753；√74=8.60232526704263，
19、√75=8.66025403784439；√76=8.71779788708135；√77=8.77496438739212；√78=8.83176086632785
20、√79=8.88819441731559；√80=8.94427190999916；√81=9；√82=9.05538513813742；√83=9.1104335791443
21、√84=9.16515138991168；√85=9.21954445729289；√86=9.2736184954957；√87=9.32737905308882
22、√88=9.38083151964686；√89=9.4339811320566；√90=9.48683298050514；√91=9.53939201416946
23、√92=9.59166304662544；√93=9.64365076099295；√94=9.69535971483266；√95=9.74679434480896
24、√96=9.79795897113271；√97=9.8488578017961；√98=9.89949493661167；√99=9.9498743710662；√100=10。
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