计算36×1.09+1.2×67.3=______.

问题描述:

计算36×1.09+1.2×67.3=______.

36×1.09+1.2×67.3,
=1.2×30×1.09+1.2×67.3,
=1.2×(30×1.09)+1.2×67.3,
=1.2×33.7+1.2×67.3,
=1.2×(33.7+67.3),
=1.2×100,
=120;
故答案为:120.
答案解析:通过观察,把36看做1.2×30,进一步计算,得1.2×33.7+1.2×67.3,运用乘法分配律简算.
考试点:小数的巧算.
知识点:凡是简算的题目,应仔细审题,根据数字特点,运用所学的运算定律,灵活简算.