有理數百題競賽試題

1、1有理數百題競賽試題滿分100分學號_________________姓名_______________3_____)3(.52_______7)7.(51納米_____米1.50位_______表示精確到1090.2近似數.49米_____厘米1.48________的相反數是1049.2.47_______萬是500科學記數法表示.46________是60090000科學記數法表示.45________保留三位有效數字是02019

2、.0用四舍五入法對.44________原數是1049.2.43________的值是812.42_______個3平方等于它本身的數有.41________相乘2個5表示2.40_______a1aa則1a0若.39______109.12129000科學記數法表示.38_______精確到十位1050.9.37_______積大于每一個因數.36______baba異號，則ba若的數的和是所有絕對值小于________0a是有理數，

3、則a若.33_______數的相反數減去任何數總等于這個0.32_________ba則ba若.31______是有理數，也是偶數0.30””或“題填寫“41——.30101.1______1009.1.29342_____34.280_____bac0c0b0a.27b_____a則0ba若.26_____14.3.25)5(____5.2443_____32.23b1____a1則ba0若.220_____a0a.210____a則

4、0ba0ab.200____x則0xx.19a____a時，0a當.18““““““““““題填寫2918______n1m互為相反數，則nm.17_______ba則03b)1a.(16等于它的相反數_____.15________的相反數的相反數是)3.(14________的相反數是ba.13_______的負倒數是25.0.12_________3.11_______35.10________的倒數的絕對值為6.9_______

5、倒數等于它本身的數是.8________最小的正整數是.7________的負倒數是2006.6_________數是個單位長度的點表示的3的點1到表示.5_______x則4x若.4______a1則23a若.3________)]a([.2_______)]3([.165525243299222??????????????????????????????????????????????????????????????????????

6、??????????????????????????????35.0_______10034.???2_______200420042003200320032004.100________)10198()9187()8178()7165()6154()5143.(99________)201211()611(511)411(311.98_____20062005654321.97_______]2)33()4[()10(.96_____

7、___132)32(43)0()4.(95_______)2(3)3(0.94_______362.93______312)3221(39.92_______)75.2()412(5.152.91_______25.0)32()433(32210.90________x)x7(x30x.89_______ax7axax2.88_________m3n2n3m2.87_______x8.9x2.86_________1197.0374.2

8、736.411137.0.85______100990)181(56)7.(84_______)5()4(54.83______)2131()1(1.82______)3121(18.81_______)32(32.80______)21()1.(79______)8()2(4.78_______378111213821.77_______)3()2.(7627).(75______)2.0.(74______0.7381).(72__

9、_____2)2(為偶數，則n若.71______)1()2.(70_______)1.(69_______7.0107.0)10.(68______)321(0.67______)3()81279.(66______21161.65______3.0)24.(64______)43(785.3.63_______12)413121.(62_______)10(100)01.0(1.0.61_______)21(16.60_______

10、_)9()6.(59________)5()4()3()2.(58_______212)321.(57_______)109(8.56_______)2006(0.55_____88.54_______21)17.(5322423322252223523331002nn232007???????????????????????????????????????????????????????????????????????????????