六年级上册数学计算专项训练 分数混合运算
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简介
一、脱式计算 813÷2426×67 =813×2624×67 =23×67 =47 26÷1325÷1522 =26×2513×2215 =50×2215 =2203 (23+221×38)÷2021 =(23+128)÷2021 =(23+128)×2120 =23×2120+128×2120 =710+380 =5980 45÷[(35+12)×2] =45÷[35×2+12×2] =45÷(65+1) =45÷115 =45×511 =411
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