计算并验算.上2×5j&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;32上+185j&nb3p;&nb3p;&nb3p;&n-六年级数学

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题文

计算并验算.
上2×5j&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;
32上+185j&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;
121上-15j8&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;
3248÷5j.
题型:解答题  难度:中档

答案

(k)得2×一6=j0t2;


(2)t2得+k8一6=2k8t;


(t)d2k得-k一68=得6jd;


(j)t2j8÷一6=一8.

据专家权威分析,试题“计算并验算.上2×5j&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&..”主要考查你对  认识乘法  等考点的理解。关于这些考点的“档案”如下:

认识乘法

考点名称:认识乘法

  • 定义:
    求几个相同加数的和或是求这个数的几倍是多少用乘法计算。

  • 知识点拨:
    3+3+3+3+3+3=18,像这样的加法,还可以用乘法表示,有6个3,
    用乘法算:
    6×3=18,读作:6乘3等于18
    或3×6=18读作:3乘6等于18