1、简便运算(138)12520(175)1420527638276621022625(4032)(57)80814125616255425134312523454073525645347519992843598(86)12548251253625259468741532370021858151225125(84)2825(1525)225(840)1252425241625193212544250125562012537242982516752524345497 16(3712)48195219641252548 321446856 84729747253(257)460(15500)24819
2、843519998(1259)46185418(40016)517048041035613681332(24)155(206)82382796496296715116584(12512)82931731771991475997510236498080 230216184 48125(2530)41881252125(86)25444207556793394(2515075)121512354(2530)3225135415265 5(1820) 5298 99999 365365 389938 5(1820)311282831 (25250)4 (125125)8 46101 3+18(+)7
3、+5()(24)(+)(+)()(3217)(25)(2121)(99)9()()30345841 ()235 - 13518153 0.653()10 - - + 2513.098.124.8812103450075()()151137.519.52.546.62.5(- )60+258(15)101- 99 + (+ ) + - 32536( - ) 4.6+5.4()2.8+7.2+ +2.25+0.75+0.375 +(+)48.3-4.25+60.6250.5+62.5%2.5(+) 22+2575%-70.75 0.2563.5 2.5-+3.125+ +(-1.8) (111+9
4、99) 56(-) 49.5-(50-)0.6 + 45(+0.6) 89737.5%+1040.375 (5.375) 3.5+1.25+3.8 7199 3755+2996 8439+1001446+295 888+999 1125-996 299101 2532125 70999+709 0.2548 2.50.4226.6+2.56 75.399+75.3 4.63.7+540.37 0.125+8.25+12.5%1161 154.255 19.826.573.43 4.6+3+6+5.44+2.25+5+7 9.632.54 8.37-3.25-(1.37+1.75) (114-114x0.25)+18