试题 试卷
题型:计算题 题类:常考题 难易度:困难
小学奥数系列1-3-5换元法
×2.8=
0.75+ =
× =
÷ =
÷60%=
﹣ × =
120× =
18× × =
= {#blank#}1{#/blank#} ={#blank#}2{#/blank#} ={#blank#}3{#/blank#} ={#blank#}4{#/blank#}
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