概要:①77×83 ②56×64③134×73 ④9×11×101①536+(541+464)+459 ② 588+264+148③ 8996+3458+7546 ④567+558+562+555+563① 1870-280-520 ② 4995-(995-480)③ 4250-294+94 ④ 1272-995① 478-128+122-72 ② 464-545+99+345③ 537-(543-163)-57 ④ 947+(372-447)-572①23×1010101 ②4568×100010001③72×125
小学六年级奥数速算与巧算9,标签:六年级奥数题库,http://www.laixuea.com①77×83 ②56×64
③134×73 ④9×11×101
①536+(541+464)+459 ② 588+264+148
③ 8996+3458+7546 ④567+558+562+555+563
① 1870-280-520 ② 4995-(995-480)
③ 4250-294+94 ④ 1272-995
① 478-128+122-72 ② 464-545+99+345
③ 537-(543-163)-57 ④ 947+(372-447)-572
①23×1010101 ②4568×100010001
③72×125 ④45×99 ⑤75×36
①77×83 ②56×64
③134×73 ④9×11×101
6. 计算:9×17+91÷17-5×17+45÷17.