1、簡便計算分類練習題第一種(300+6)x1225x(4+8)125x(35+8)(12+24+80) X503225+125)25X24+164X(25 X5+25X28)(13+24)x8第二種84x101504x2578x10225x204704X2588X125102 X76101 X87第三種99x6499x16638x99999x9998 X19958 X9899 x2798 x3479X42+79+79X5784 X36+64 X 8475X99+2X7575X27+19X2 531 X870+13X31078X4+78X3+78X3第五種88X12572X12575X2412X2

2、5125X32X875X2425X32X12550 X(34 X4) X138X25X4(13 X25) X X)25 X32 X125第四種99X13+1325+199X2532X16+14X32178X99+178第六種3600十25詔81004753000-12581250 十25 弋7300十25詔3900 十39X25420 - 5X7800 - 20X8第七種1200-624-762100-728-772273-73-27847-527-2735001 247 1021 23223561780 16653065 738 10652357 183 317 3

3、572365 1086 214第八種278+463+22+37732+580+268425+14+186158+262+1381034+780320+102375+219+381+2252214+638+286181+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+14787- 87-29365-65+118455-155+230第十種576-285+85825-657+57690-177+77755-287+87第十一種87

4、1-299157-99363-199968-5991883 398第十二種178X101-17883X102-83X217X23-23X783 X102 83X2178X101 17835X127-35X16-11X35123X18 123X3+85X123497299899+3443999+4982370+1995157+99容易出錯類型共五種類型600-60 怖20X420X4-736-35X2025X4 十 25X498-18X5+2556X856X8-280-80 -412X612X6175-75 吃525X825X8-80-20X2+6036X936X936-36 七-625X825

5、X8-100+45-100+4515X97+3100+1-100+148X99+11000+8-1000+85+95X28102+1-102+165+35X1325+75-25+7540+360 十 20-1013+24X8672-36+64324-68+32100-36+6426X 39 + 61X 2678X 101-7848X 52X2 4X 48184+ 98695380+ 476 + 120256 147 5328X 4X 25簡便計算綜合練習題1356X9 56 X 952 X 76+ 47X 76 + 7625X 23X 40+ 499 X 55 + 55134X 56 134+

6、 45X 134+ 202864199569+ 468+ 432 + 131373 129 + 29125X 32 X 25999X 999 + 1999738 301704X 25189 89 + 749X 72X 125720- 16+5630-42456 256- 36102X 35 98 X42158+262+138375+219+381+2255001 247 1021 232181+2564 +2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+9999977

7、55 (2187+755)2214+638+2863065 738 1065899+3442357183 317 3572365 1086 214497 2992370+19957755 (2187+755)3999+498188339812X 2575 X 24138X25X4(13 X 125) X (3 X 8)(12+24+80) X 5025X 32 X 12532 X (25+125)88 X 125102X 76178X 101 17884X 36+64X 8475X 99+2X 7598X 199123X 18 123X 3+85X 12350X (34 X 4) X 325X

8、 24+16178X 99+17879X 42+79+79X 57158+262+138簡便計算練習題4得分1248-243150- 154800- 2521500- 12516800-12030100-210032000-40049700-700181+2564+2719375+219+381+2255001 247 1021-232378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+999997755(2187+755)2214+638+28630657381065899+3

9、443999+4982357 183 317 3572365 1086 214497 29912X 2575X 24138X25X4(13 X 125) X (3 X 8)(12+24+80) X 50704X 2525X 32X 12532 X (25+125)88X 125102X 7658X 98178X 101- 17884 X 36+64X 8475X 99+2X 7583 X 102-83X 298X 199123X 18- 123X 3+85X 12350X (34 X 4) X 325X 24+16178X 99+17879X 42+79+79X 5721500-1251680

10、0- 120a+ b+ c = a + b + c)2.73 + 0.89+ 1.274.37+ 0.28 + 1.63+ 5.72ab c = a b+c10 0.432 2.5689.35.26 2.7414.9 5.2 + 4.918.325.474.32a xbx c = ax b x c25 x6.8 x 0.046.4 x1.25 x 12.5c x a+b= c x a + cx b0.45 x 2010.58 x 10.150.2 x 994.7 x 9.923 X 0.1+ 2.3 X 9.93.28 X 5.7+ 6.72 X 5.70.18+ 4.26 0.18 + 4.260.58 X 1.3 - 0.58 X 1.37.3 -4 + 2.7 X 0.253.75 X 0.5 2.75 - 25.26 X 0.125+ 2.74 - 8a b c=ab X cX 86.31.89.5 1.99300.6563.42.50.412.8 - 0.4 X 1.67.7 + 1.54- 0. 76.9 + 4.8 + 3.115.89+ (6.75 5.89)7.85+ 2.34 0.85 + 4.6635.6 1.8 15.6 7.213.75 (3.75 + 6.48)47.8 7.45+2.5566.86 8.66 1.340.25 X 16.