簡便計算分類練習(xí)題

1、簡便計算分類練習(xí)題3999+4981883- 39812X 2575X 24第一種(300+6)x1225x(4+8)125x(35+8)(12+24+80)X504 X (25 X 65+25 X 28) (13+24)x832X(25+125)第二種84x101704義25第三種99x6498X199第四種99X13+1325X(24+16)504x2588X12599x1658X9825+199X2578x102102X76638x9999x2732X16+14X3225x204101X87999x9998x34178X99+17875X99+2X7578X4+78X3+78X379X4

2、2+79+79X5784X36+64X8475X27+19X2531義870+13X310第五種88X125 125X32X8 138X25X4第六種 3600+25+47300+25+4 第七種272X12575X2475X24 25X32X125(13 X 125) X (3 X 8)8100+4+753900+(39X2(273-73-273000+125+8420+(5X)847-527-27312X2550X(34X4)X325X32X1251250+25+5800+(20X85001-247-1021-2322356-(1356-721)1235-(17801665)3065-73

3、810652357-183-317-3572365-1086-214第八種278+463+22+37732+580+268425+14+186158+262+1381034+780320+102375+219+381+2252214+638+286(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+99999第九種214-(86+14)787-(87-29)365-(65+118)455-(155+230)第十種576-285+85825-657+5

4、7690-177+77755-287+87第十一種871-299157-99363-199968-5991883-398497-299899+3443999+4982370+1995157+9983X102-83X217X23-23X783 X 102-83X2第十二種178X101-178178X10117835X127-35X16-11X35123X18123X3+85X123容易出錯類型(共五種類型)600-60 -1520X4+20X4 98-18X5+2556X8 + 56X8 175-75 -2525X8+25X8 36-36 - 6-625X8 (-25X8) 100+1-100

5、+148X99+1 102+1-102+1 65+35X13736-35X2025X4+25X4280-80-412X6+12X680-20X2+6036X9+36X9100+45-100+4515X97+313+24X8672-36+64324-68+32100-36+641000+8-1000+85+95X2825+75-25+7540+360-20-10簡便計算綜合練習(xí)題126X 3961 X 26356 x A 56 X 999 X 55 5578X1017852X7647X7676134X56134+45X13448X524X4825X23>(40+4)999乂99919991

6、84+98695+202864-199738301380+476+120(569+468)+(432+131)704X25256-147-53373129+29189(89+74)28X4X25125X32X259X72X125簡便計算練習(xí)題2720+16+5630+42456(25636)102X3598X42158+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+

7、999997755-(2187+755)2214+638+2863065-738-1065899+3442357-183-317-3572365-1086-214497-2992370+19957755 (2187+755)簡便計算練習(xí)題3138X25X4(13X125)X(3X8)(12+24+80)x5025X32X12532X(25+125)88X125102X76178X10117884X36+64X8475X99+2X7598x199123x18123x3+85x12350X(34x4)x325X(24+16)178X99+17879X42+79+79X577300+25+48100

8、+4+75158+262+138簡便計算練習(xí)題41248+243150+154800+2521500+12516800+1203010021003200040049700+700375+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-(2187+755)2214+638+2863065-738-1065899+3443999+4982357-183-317-3572365

9、-1086-214497299簡便計算練習(xí)題512X2575X24138X25X4(13X125)X(3X8)(12+24+80)X50704X2525X32X12532X(25+125)88X125102X7658X98178X10117884X36+64X8475X99+2X7583X10283X298X199123X18123X3+85X12350X(34X4)X325X(24+16)178X99+17879X42+79+79X5721500+125簡便計算練習(xí)題6300+25+48100+4+7516800+120(a+b)+c=a+(b+c)+abc=a(b+c)10(+)(ax)b

10、xc=a(bx)c25xxx32xxxcXa+b)=cxacxbx201xx99x簡便計算練習(xí)題7x+xx99+23X+X+-+x+xx+2x+8a+b+c=abxg+(x8+(x)930+5+(+)+簡便計算練習(xí)題8+HHH-|-+xX4X32XX(4+X8X1001X99x+"X內(nèi)"xX+4x+x5類型一：(注意：一定要括號外的數(shù)分別乘括號里的兩個數(shù)，再把積相加)(40+8)X25125X(8+80)36X(100+50)類型二：（注意：兩個積中相同的因數(shù)只能寫一次）36X34+36X6675X23+25X2363X43+57X6393X6+93X4325X113325X1328X188X28類型三：（提示：把102看作100+1;81看作80+1,再用乘法分配律）78X10269X1025