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1、简便计算分类练习题第一种(300+6)12 25(4+8) 125(35+8) (12+24+80)50 32(25+125) 25(24+16) 4(2565+2528) (13+24)8第二种84101 50425 78102 25204 70425 88125 10276 10187第三种9964 9916 63899 9999998199 5898 9927 9834第四种9913+13 25+19925 3216+1432 17899+1787942+79+7957 8436+6484 7599+275 7527+192531870+13310 784+783+783第五种88125
2、 72125 7524 1225 1253282532125 50(34)3 138254 (13125)(38)第六种3600254 8100475 30001258 12502557300254 3900(3925) 420(57) 800(208)第七种1200-624-76 2100-728-772 273-73-27 847-527-2735101-247-1021-232 2356-(1356-721) 1235-(1780-1665)3065-738-1065 2357-183-317-357 2365-1086-214第八种278+463+22+37 732+580+268 4
3、25+14+186 158+262+138 1034+780+320+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-(155+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
4、 968-599 1883-398 497-299 899+344 3999+498 2370+1995 157+99第十二种178101-178 83102-832 1723-237 83102-83235127-3516-1135 12318-1233+85123简便计算综合练习题12639+6126 3569-569 9955+55 78101-785276+4776+76 13456-134+45134 48522-448 2523(40+4)999999+1999 184+98 695+202 864-199 738-301380+476+120 (569+468)+(432+131
5、) 70425 256-147-53 373-129+29189-(89+74) 28425 1253225 972125简便计算综合练习题2720165 63042 456-(256-36) 10235 9842158+262+138 375+219+381+225 5001-247-1021-232 (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 3065-738
6、-1065 899+344 2357-183-317-3572365-1086-214 497-299 2370+1995 简便计算练习题33999+498 1883-398 1225 7524138254 (13125)(38) (12+24+80)502532125 32(25+125) 88125 10276 178101-178 8436+6484 7599+275 12318-1233+8512398199 50(344)3 25(24+16) 17899+1787942+79+7957 7300254 8100475 158+262+138简便计算练习题4124824 315015
7、 480025 2150012516800120 301002100 32000400 49700700375+219+381+225 5001-247-1021-232 181+2564)+2719 497-299378+44+114+242+222 276+228+353+219 (375+1034)+(966+125)(2130+783+270)+1017 99+999+9999+99999 7755-(2187+755) 2365-1086-214 2214+638+286 3065-738-1065 899+344 3999+498 2357-183-317-357简便计算练习题51
8、225 7524 138254 (13125)(38)(12+24+80)50 70425 2532125 32(25+125)88125 10276 5898 178101-1788436+6484 7599+275 83102-832 981991238-1233+85123 50(344)3 25(24+16) 17899+1787942+79+7957 21500125 7300254 8100475 16800120 简便计算练习题6 (a+b)+c=a+(b+c)2.73+0.89+1.27 4.37+0.28+1.63+5.72a-b-c=a-(b+c)10-0.432-2.56
9、8 9.3-5.26-2.74 14.9-(5.2+4.9) 18.32-5.47-4.32(ab)c=a(bc)256.80.04 0.25320.125 6.41.2512.5c(a+b)=ca+cb0.45201 0.5810.1 50.299 4.79.9简便计算练习题73.285.7+6.725.7 2.199+2.1 230.1+2.39.9 0.18+4.26-0.18+4.260.581.30.581.3 7.34+2.70.25 3.750.5-2.752 5.260.125+2.748abc=a(bc)6.31.8 9.5(1.98) 12.8(0.41.6)9300.65 63.42.50.4 (7.7+1.54)0.7简便计算练习题86.9+4.8+3.1 15.89+(6.75-5.89) 7.85+2.34-0.85+4.6635.6-1.8-15.6-7.2 13.75-(3.75+6.48) 47.8-7.45+2.5566.86-8.66-1.3