三年级数学下册练习脱式计算题300道题

1、396+3 + 225 X8 + 4985-168 + 4648+480+ 3124-735 + 7(34 + 22) +845+ (15+3)(601-246) +5763-386- 36372 70 + 7 29205+7X862- (25-7)32X4 + 72305 X 3-154470 + 5-28523+248-475459+9X7294 + 399+ 7264+159+47892-537+469900-473-227 406+ 369+ 94683+ 258 383359+ 432-18981 81+9460+ 177-177698245 155456+ 299+81542 12

2、8 272853109 85363X 7+540550+ 45X9838-(138 + 275)964 80120+ 800+ 1057X 8-406208+342+ 292803-589+ 11199X2+3235178 165615X3+745X 9-3351000487 513X 37 + 460289+578-189329+ 332+171836+ 529 436207X 8-987123+377X 21948+ 539-648406X 7-669438+ 279+362200+ 150X 30+ 5 650+ 50X32106012+ (200 194)93675+360+(20 5

3、) 72 6X4+ 375 +360+20 5 (75 +360) + (20 5)12+(40 +5X24) (5625 +3675) + (15+5) 681+27X 4+ 223+253X 4720+(15 3X2) 3889 (108 + 41)X5 (800 +200+ 50)X3 45 +165+3960 40+ 20-15 640 -(80 -20X 3)44 X 12 + 29550+11015X436835X 11(365-328) X ( 73 55)(4535-500) + ( 782777)63248X 12 + 86252 +6+35X7672+ (3 X 25- 7

4、3)48-(2 + 6)70324X 25(252+144) + ( 308298)23 X46+ 293 X (515 428)82 + 41X68(69+21) X (72 +8)(16+ 20)X35(12687)X12 + 26234+(205 199) (75 +315)+(25 20) 100 +25 + 4(10+25)X44(121 92)X 12+6 620 530+ 5X2 178 (83 + 360+60) 870 30+15+ 13(420+60)+(275 245) 25 X 32X 125 460 + (30 21+3)9000 75X24960 + 1528 (4

5、9 +21) X (48-8) 45 +180+306844X9 + 613575+ 5182 +13+34X3 45+120+(30 6)196+ 24X18466+14X 22400 +6016X2 420 +(205 198)X4 44 X 12+29203135+ 9 (84 -4) X9 + 6 (65 +250)+(18 13) 36X 13 + 207 + 328+120X8 (124 -85) X 12-2182545 + 9X24 (270 -180) +307212X6 + 43 (59 +31) X (96-8) 1024 (680 + 640+8) 640 +8 508

6、00+20+ 4 4800 24X(32 +2)26X 4 125+ 5860-20X 30720+8801865-468-3324 X 38-123689498 689987+3X696 X(2875+ 5)1674 45+9X10056 (25 + 17)291X4X5555x 7X 478X3+91005996+6X2256X7X 545150X4+10726+274X 341761912X 3+45614(3000+ 614)45、6024+3 + 428001089(400+ 311)328+16X2(10036) +4718-75X 3(187 24) X 5233574X8275

7、X6 + 3(399-214)(582+ 6467) +7424X3X2328+ 172X 6516 123+ 77347X4-1922762(76278)6X25+75X637X 100 37451+ 549+334+ 306X2169+584+ 731345+255 + 5257X4 + 2256+389+ 211567X2X5369X2 + 3258+ 493 5845X9+55X919898X 2(741-159) +65465167+ 45+ 282763 84 163468+ 28+ 32405+ 9X3456-178- 256345+456+ 155(321 39) +684+7

8、+35X4540-9-300- 6480+8+320 + 4120 X3 90X 230 X 4+60X5 488+ 423X4180+9-18(48+52) +5100-2520+807X (34+56)105X2X5800-57(65+16) +9230 X ( 140-132)24 X 5+24X 7(2534 958) +8792 X7 + 9707 35 X 20(120 103)50 50 +160+40(58+370) + (64-45)120-144 + 18+35760+ 10 + 38 95 19 X 5 ) + 74 24 X 5+24X 7(120 103) X 505

9、0+160+40(58+370) + ( 64-45)(95 95 ) +7414+20 +585+14 X 3284+16 X 54280+ ( 1911)78 X7+81 + 9(5021-3918) X 6 1208 -230X 580 + 9-18(48+52) +5100-25X420+80 X 37X (34+56)105X2X5800-57 X 9(65+16) +9230X ( 140-132)24 X 5+24X 72534958) +8792X7 + 9(5021-3918) X61208237X54280+ ( 1911)190 +360 + 24X8(140+60)X(

10、26 8)78X 7+828+ 18(359 -42) X53+ 64280+650+131000- (280 + 650+ 5 )707 35 X 20120-144 +18+35760+ 10 + 38(95 19 X 5 )一45 X 20 X 3(270 + 180) +5347+45乂 24160+ 5295+ (64-45)178-145+ 5 X 6+42420+58064X21 + 28812-700(9+31X11)(36+64) X 6585+14X (14-8)(284+16) X 8120-36X2(58+37) X 522 X4+22121X3 + 41040+ 2+

11、174147 +72 + 89X4+4202X80 + 4120 X5+2202+ 36+ 930+ 5 + 24081 +9+87766X 5+774921+7X47480 X6X2770+ 7+65807+ 20+2100 50 + 535 35 + 7302+ 30X 2600 X8 + 340+ 100+5434+ 25X 560 12X364+ 8+ 456640+ 60X 45 X 7-48-642+ 7+36+637X4+19X810 X4-20-415+ 3+10+525+ 5 + 42 + 635 + 5 + 8X772+ 9 36 + 621X4- 54+ 972 + 8

12、+ 9X536+ 4+21X225+ 5 16+ 456 + 7 + 36 + 6500X (400 396)72+ 95564+264-4537650-(546+4530)65X 9-4509X80+9809000-(4500+250)6700+72+ 814X6+9X 5900+(71-68)180+ 9-42 + 612 + 6 + 45X38X (910-720)760-540+11106500+1250-350080X 30+56009450-3200-42002400+ 6-45800X 71801600+ 2+ 2304000 + 8 + 350320+ 8+64270+ 3X9

13、630 + 9 + 3202800+32X 6300+ 6X 9(6900-2400) + 5(72+9) +(56+8)54+ 9X8280X 4 +560X8+157060X (23-17)960+4X9350+ 5X9450+ 5+1250(6900-2400) +575+ 15+20X53090+ 6X6(387 387) + 0160-160-80750+ 550+5(111 +189)X3125X8+1006X 250X0(1 +7) X(16 -6)810X4 + 433+ 11 + 4X9187+299- 299587+ 496-6742660+ 26 + 4153+153+65732+