346+51{#blank#}1{#/blank#}264+151        551+193{#blank#}2{#/blank#}738+49   

375+416{#blank#}3{#/blank#}428+258       252+492{#blank#}4{#/blank#}345+248 

273+346{#blank#}5{#/blank#}523+180       651+85{#blank#}6{#/blank#}285+451

305×6{#blank#}1{#/blank#}1800

609×5{#blank#}2{#/blank#}906×4

502×7{#blank#}3{#/blank#}3600

549×7={#blank#}1{#/blank#}

{#blank#}1{#/blank#}鱼的条数比鲢鱼多一些；

{#blank#}2{#/blank#}鱼的条数比鲢鱼多得多．

9000kg9吨 7kg6500g 56÷230

14×560 88÷844÷4 103×4450