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1、四年级下册简便运算300道158+262+138375+219+381+22550012471021232(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+999997755(2187+755)2214+638+28630657381065899+3442357183317357236510862144972992370+19953999+498188339812257524138254(13125)(38)(12+24+80)5070425253
2、212532(25+125)881251027658981781011788436+64847599+2758310283298199123181233+8512350(344)325(24+16)17899+1787942+79+795773002548100475168001203010021003200040049700700124824315015480025215001252356(1356721)1235(17801665)7527+192 531870+133104(2565+2528)(1)(7861)39 (2)7008218(3)348163242410537(4)1254
3、74725 (5)201316(6)37420522695 (7)3000999(8)997721 (9)8747087053(10)(555555555)125(11)125(840)25 (12)994999(13)264974264(14)454999999545(15)9999366666332(16)124386512476110767(17)624445518(18)3400623438203814(19)199219911991-199119901990(20(246100)-(13599)1 2.73 0.89 1.272 4.37 0.28 1.63 5.721 10 0.4
4、32 2.5682 9.3 5.26 2.743 13.4(3.45.2)4 14.9(5.24.9)5 18.32 5.47 4.326 17.29 5.28 6.291 25 6.8 0.042 0.25 32 0.1253 6.4 1.25 12.51 0.45 2012 0.58 10.13 50.2 994 4.7 9.95 3.28 5.7 6.72 5.76 2.1 99 2.17 1.7 9.9 0.178 23 0.1 2.3 9.91 0.18 4.26 0.18 4.26 2 0.58 1.3 0.58 1.3 3 7.3 4 2.7 0.25 4 3.75 0.5 2.
5、75 2 5 5.26 0.125 2.74 8 a b c = a (b c)6 6.3 1.87 4.2 3.58. 9.5 (1.9 8)9 12.8 (0.4 1.6)10 930 0.6 511 63.4 2.5 0.412 (7.7 1.54) 0.713 (11.7 9.9) 0.9158+262+138375+219+381+2255001-247-1021-232(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+999997755
6、-(2187+755)2214+638+2863065-738-1065899+3442357-183-317-3572365-1086-214497-2992370+19953999+4981883-39812257524138254(13125)(38)(12+24+80)5070425253212532(25+125)88125102765898178101-1788436+64847599+27583102-8329819912318-1233+8512350(34+4)325(24+16)17899+1787942+7979577300254810047516800120301002
7、1003200040021500125497007001248243150154800252356-(1356-721)1235-(178-1665)7527+192531870+133104(2565+2528)(300+6)1225(4+8)125(35+8)(13+24)8841015042578102252049964991663899999999913+1325+199253216+1432784+783+78312532825321258812572125360025481004753000125812502551200-624-762100-728-722273-73-27847
8、-527-273278+463+22+37732+580+2681034+780+320+102425+14+186214-(86+14)787-(87-29)365-(65+118)455-(155+230)576-285+85825-657+57690-177+77755-287+87871-299157-99363-199968-599178101-17883102-8321723-23735127-3516-1135600-6015204204736-352025425498-185+25568568280-804126126175-752525825880-202+602639+61
9、263659-5699955+5578101-785276+4776+7613456-134+4513448522-4482523(40+4)999999+1999184+98698+202864-199738+301380+476+120(569+468)+(432+131)70425256-147-53373-129+29189-(89+74)284251253225972125158+262+138375+219+381+2255001-247-1021-232(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+
10、125)(2130+783+270)+10177755-(2187+755)2214+638+2863065-738-1065899+3442357-183-317-3572365-1086-214497-2992370+19953999+4981883-39812257524138254(13125) (38)(12+24+80) 50253212532(25+125)8812510276178101-1788436+64847599+2759819912318-1233+8512350(344) 325(24+16)17899+1787942+79+7957158+262+138375+219+38+22512257524138254(13125) (38)36936936-366-6258(258)100+45-100+451597+3100+1-100+14899+11000+8-1000+85+9528102+1-102+165+351325+75-25+7540+36020-10730025481004751883-3981