四年级下学期数学递等式300道

1、518171482129326+326X9932978271104X7359X4X2523X(300+2)3X125X13 X858+19 X5896X12532 X62+68 X624X301X25X316 X21X25038X(209-87+29)53 X28+71X53+53103X15(750+250)+125X12125X3925X39593+(356+207)25X204567 北 3+15X2350X16X125199 X99+9944X250125X25X50 X64101X38-25X38X42310 +【235-160 +(18+22 )】864 十【(2193-1457

2、)+23】(125+9)X886X103+35925+34+375+166201X93328-( 257-172 ) -14369X59+42X69-69356+4X (470-362)25+125)X3254+99X99+45904X(386-264)3150-9018-18-10714+14 X52+53 X86204X35-846 北18X69-18+32X181961+49X67-1836X25-25X20+16X7523 X98+23125 X8840X(72+28)364-187+36-2132048-567-7 X57X88X1257200-81X9【2145-(517+388)

3、X241001X99925X125X48【1128-(128+500)-25X227X24X25101X49+250X8X477X56+110878X32+67X32+78132-56)-38【(576-36)+14X556480-259-141+320(1408-45X24)+414837-181+719804X25250X4+1050+25621 -21+102X15625 -25X4-25476+249+324-49(480+33X14)+1575974+103+(221-163)X1848X25+48 X25(25X125) X(27X32)125X72+25105-5X(4992+4

4、8-86)25X16X125374-186-114386+137+114-37125X4+2556X125+8637-(237-65)(125+4)X7279X79-79+22X7932X(125+25)199X199125 X80115 X27+73X16554 X64+446X6435X35+35 X64+35450 -【(393-388)X(6+4 )】777 X6+111 X5873X165+73-73X6684X25700-82+184600 -25 -45327-4500-32785 X65-14 X85-85125X25X38X4 X898 X2117X4X25 25X33X40

5、 125X19X8 25X125X16125X32 25X48 2008X25 125X79299X99+99X39000-8-12515X19+15X18+21X4590-90-91000-125X8540X31-2701360-（136-2）4400-25-4125X(40+8)(100-4)X25(80-4)X2557X32+32X43 173X61-73 X61 52X14-22X14(181+2564)+271981+791 X9 101X32-32 72+99X72378+44+114+242+222158+262+138276+228+353+219375+219+381+225

6、50012471021232(375+1034)+(966+125)2357183317357236510862147755(2187+755)4972992214+638+2862370+1995306573810653999+498899+344(2130+783+270)+101799+999+9999+999991883398704X2512X2525X32X12575X2432 X(25+125)138X25X488X125(13X125)X(3 X8)102X76(12+24+80)X5058 X98178X10117850 X(34X4)X384X36+64 X8425X(24+

7、16)75X99+2X75178 X99+17883X10283X279X42+79+79X5798X1997300-25-4123X18123X3+85X1238100-4-7516800+1204800+2530100+210021500+12532000+4002356(1356721)49700+7001235(17801665)1248+2475 X27+19X2 53150+1531 X870+13X31013843573830009994X(25 X65+25X28)498+397(78+61)+39(2)700821831.50+160-40348+163+242+410+53

8、732.120-144-18+35125X4747X2533.347+45X2-4160 -52201X31634(58+37)-(64-9X5)374205+226959999X36+6666X3X32125 X56997X7+21(9)87X470+870 X53124X38+65X124+76X11076X7(55+55+55+55X5)X12562X4+44 X5+5X18125X(8+40) X25 (12)99+49X99340062X3438X2038X14264 X97+4X264502399454+999X999+545634555+137302 X99+302302 X99

9、+302145 X8138435738145 X89+145 X21 138435738498+397498+397502399502399634555+137634555+137125 X565125 X56400273127327+(96127).9+145X21138435738、72 X98368+2649+135144210314289+101+111999+99+924+127+476+573、67X5X2302 X99+302145 X89+145X2125X(78X4)76X10272X1253600-25-49000-125-899X35400 -25(25+12)X425X

10、3656 X27+27X44103X2756 X99+56374205+22695.300099987X470+870 X5333.264X97+4X264125X25 X8X4201X316(78+61)+39.997X7+2125X32X125125 X647008218125X4747X2534.454+999 X999+54540.125-25X(4526)45.175X3236-435.43737X2+841.86+360-205736.1500-1515X442.(85+230)-(3520)37.18013X5+3643.160+240-305838.194+840-7+1604

11、4.1285125-25X4039.45 X6+37X346.(158+25X14)+452.400+612+12X448.250 X8460+1050.55025X12+88051.(6828)X(12+28)47.58218X1153.678+678 X9954.103X1249.21X(230192+4)55.76+82+118+12456.489+665+21157.76X62+62X12467.420-15-468.9825277358.39X2839X864.401X7559.62020411665.(125+7)X860.45X199+4566.240-16-561.25X20462.125 X8863.125X15 X8X269.653653577.25X125X40 X878.73X18+83X7373.312X4+188X479.(300+6)x1274.592X12780.25x(4+8)75.45X71+29X4581.125x(35+8)70.8X6X12576.