-1-实数的运算大全1.计算:8×24;2.计算:52;3.计算:3×(21-12+1)4.计算:2-21;5.化简:316437;6.计算:212+348;7.化简:348;8.计算:)515(59.计算:25282610.计算:202232()()()22311.计算:|-2|-(3-1)0+12112.化简:×510=213.化简:×268314.化简:531215.化简:223616.计算:(25+1)217.计算:)12)(12(18.计算:(1)209519.计算:861220.计算:(1+3)(2-3)21.计算:(132)222.计算:(2+5)223.计算:2185024.计算:)82(225.计算:372126.计算:1040510427.计算:2)313(28.计算:25058029.计算:(1+5)(5-2)30.计算:(1)(1-2+3)(1-2-3)31.计算:)623)(623(32.计算:320-45-5133.x=2-3时,求(7+43)x2+(2+3)x+3的值
-2-34.计算:32221(4)3()35.计算:22232136.计算:021127(1)12437.计算:∣-2∣-23+1238.先化简,再求值:5x2-(3y2+5x2)+(4x2+7xy),其中x=-1,y=1-2.39.已知326a3与互为相反数,求a的值
40.计算:22121341.计算:(18)
221;42.若a=3-10,求代数式a2-6a-2的值;43.计算:348-1477137;44.数轴上,点A表示21,点B表示32,求AB间的距离;45.计算:2)2(18246.计算:2)525(47.已知xy=2,x-y=125,求(x+1)(y-1)的值;48.计算:)—()(23322332;49.计算:10823
2-1++(-π)-250.计算: