512−14 = - 二一组卷

题型：填空题题类：常考题难易度：容易

小学数学六年级上册百分数的应用(简单的百分数应用题、合格率等率) 7974 10 (31)

$\text{[math]}$ =

举一反三

$\text{[math]}$ ＋ $\text{[math]}$ ＝{#blank#}1{#/blank#}

$\text{[math]}$ ＋ $\text{[math]}$ ＝{#blank#}2{#/blank#}

$\text{[math]}$ - $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ = 0.25+ $\text{[math]}$ = $\text{[math]}$ - $\text{[math]}$ - $\text{[math]}$ =

$\text{[math]}$ + $\text{[math]}$ = 1- $\text{[math]}$ = 0.875- $\text{[math]}$ = $\text{[math]}$ - $\text{[math]}$ + $\text{[math]}$ =

$\text{[math]}$ + $\text{[math]}$ = $\text{[math]}$ - $\text{[math]}$ = $\text{[math]}$ - $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ =

{#blank#}1{#/blank#}

①

$\text{[math]}$ $\text{[math]}$ {#blank#}1{#/blank#}+ $\text{[math]}$ {#blank#}2{#/blank#}= $\text{[math]}$ {#blank#}3{#/blank#}

②

$\text{[math]}$ $\text{[math]}$ {#blank#}4{#/blank#}- $\text{[math]}$ {#blank#}5{#/blank#}= $\text{[math]}$ {#blank#}6{#/blank#}

③将分母不同的分数化成分母{#blank#}7{#/blank#}的分数，就可以相加减了。

$\text{[math]}$ + $\text{[math]}$ = $\text{[math]}$ － $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ =

1－ $\text{[math]}$ = $\text{[math]}$ － $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ =

$\text{[math]}$ － $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ =

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