1、42+79+7957 8436+6484 7599+2757527+192 5 31870+13310 78X4+78X3+78X3 第五种 88X125 72X125 7524 1225125X32X8 7524 25X32X125 50(344)3 138254 (13125)(38) 25125第六种3600254 8100475 30001258 1250573004 3900(3925) 420(57) 800(208)第七种1200-624-76 2100-728-772 273-73-27 847-527-273 50012471021232 2356(1356721) 1235
2、(17801665)30657381065 2357183317357 23651086214 第八种278+463+22+37 732+580+268 425+14+186 158+262+1381034+780320+102 375+219+381+225 2214+638+286 (181+2564)+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+270)+1017 99+999+9999+99999 第九种214-(86+14) 787-(87-29) 365-(65+118) 455-(1
3、55+230) 第十种576-285+85 825-657+57 690-177+77 755-287+87 第十一种871-299 157-99 363-199 968-599 1883398 497299 899+344 3999+498 2370+1995 157+99第十二种178X101-178 83X102-83X2 17X23-23X7 83102832178101178 35X127-35X16-11X35 123181233+85123 容易出错类型(共五种类型) 600-601520X420X4 736-35X20 25X425X498-18X5+2556X856X8 28
4、0-80 412X612X6175-752525X825X8 80-20X2+6036X936X936-366-6(25X8) 100+45-100+4515X97+3100+1-100+148X99+1 1000+8-1000+8 5+95X28102+1-102+1 65+35X13 25+75-25+75 40+36020-1013+24X8 672-36+64 324-68+32 100-36+64简便计算综合练习题1姓名 得分 26396126 3569569 995555 7810178 5276477676 1345613445134 48522448 2523(404) 999
5、99919xx 18498 695202 864199 738301 380476120 (569468)(432131) 70425614753 37312929 189(8974) 28425 12525 972125 简便计算练习题2720165 63042 456(25636)10235 9842 158+262+138 375+219+381+225 50012471021232 (181+2564)+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+270)+1017 99+999+9999
6、+99999 7755(2187+755) 2214+638+286 30657381065 899+344 2357183317357 23651086214 497299 2370+1995 7755(2187+755) 简便计算练习题33999+498 1883398 1225 7524 8) (12+24+80)125 32(25+125) 8876 101178 8475 98199 123123 50(24+16) 17899+178 7957 75 158+262+138简便计算练习题4124824 315015 480025 2150016800120 301002100 32
7、0xx400 49700700 375+219+381+225 50012471021232 (181+2564)+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+270)+1017 99+999+9999+99999 7755(2187+755) 2214+638+286 30657381065 899+344 3999+498 2357183317357 23651086214 497299 简便计算练习题51224 1388) (12+24+80)50 70425 25(25+125) 8876
8、 5898 178101178 8484 7575 832 98199 123123 503 25(24+16) 99+178 7957 215004 810075 16800120 简便计算练习题6(ab) c = a (bc) 2.73 0.89 1.27 4.37 0.28 1.63 5.72 abc = a (bc) 10 0.432 2.568 9.3 5.26 2.74 14.9(5.24.9) 18.32 5.47 4.32 (a b)c = a (b c) 25 6.8 0.04 0.25 32 0.125 6.4 1.25 12.5 c (a+b)= ca cb 0.45 2
9、01 0.58 10.1 50.2 99 4.7 9.9 简便计算练习题73.28 5.7 6.72 5.7 2.1 99 2.1 23 0.1 2.3 9.9 0.18 4.26 0.18 4.26 0.58 1.3 0.58 1.3 7.3 4 2.7 0.25 3.75 0.5 2.75 2 5.26 0.125 2.74 8 a b c = a (b c) 6.3 1.8 9.5 (1.9 8) 12.8 (0.4 1.6) 930 0.6 5 63.4 2.5 0.4 (7.7 1.54) 0.7 简便计算练习题86.94.83.1 15.89(6.755.89) 7.852.340.854.66 35.61.815.67.2 13.75(3.756.48) 47.87.45+2.55 66.868.661.34 0.2516.24 0.2532 0.125 2 .5 (4 +0.4) (1.250.125)8 4.8100.14.299 56.59.956.5 7.0910.80.87.093.834.563.835.44 3.654.736.50.37 5.411-5.413.70.253.74 10.716.1-1.110.7 +10.7 5
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