Question

计算：4.63×0.39+0.41×1.39-0.324×3.9=________．

Answer 1

1.112
分析：根据数字特点，把原式变为0.463×3.9+0.41×（1+0.39）-0.324×3.9，运用乘法分配律的逆运算简算，得出结果．
解答：4.63×0.39+0.41×1.39-0.324×3.9，
=0.463×3.9+0.41×（1+0.39）-0.324×3.9，
=0.463×3.9+0.41+0.041×3.9-0.324×3.9，
=（0.463+0.041-0.324）×3.9+0.41，
=0.18×3.9+0.41，
=0.702+0.41，
=1.112．
点评：完成本题要注意分析式中数据，运用合适的简便方法计算．