练 习 一,56+21+18=,95,96-34-35=,27,48+32-16=,64,连加,连减,加减混合,它们的运算顺序都是从左往右算。,46+34+16= (个),96,80-25-39= (个),16,西瓜子的粒数,绿色圃中小学教育网http:/,100-23-40= (元),37,100-23-15= (元),62,45+40+15= (元),100,85+15= (元),100,89,52,24,88,22,100,36+18+45= (根),99,36+18-10= (根),44,36+18= (根),54-10= (根),54,44,95-32-36= (节),27,32+36-23= (节),45,90-24-30= (下),36,91-26-30= (下),35,94-29-29= (下),36,36,36,91,35,92-26-30= (下),36,92,36,93-26-30= (下),37,93,37,绿色圃中小学教育网http:/,8,30-12-10=,8,30-13-8=,9,9,11,30-10-9=,11,7,12+10+( )=30,14,6,绿色圃中小学教育网http:/,