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题型:填空题 题类:常考题 难易度:容易
加法的运算定律4843
{#blank#}3{#/blank#}+28={#blank#}4{#/blank#}+18
45×{#blank#}5{#/blank#}=32×{#blank#}6{#/blank#}
①35×2×5= {#blank#}1{#/blank#}
②18×25×4 = {#blank#}2{#/blank#}
③22×30×44= {#blank#}3{#/blank#}
④60×(20×30)= {#blank#}4{#/blank#}
⑤326×50×8= {#blank#}5{#/blank#}
⑥42+99+68+1= {#blank#}6{#/blank#}
115+(570+185)={#blank#}1{#/blank#}
(475+666)+525=666+(475+525)运用了加法结合律和交换律.
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