简便计算： 6.47x52+64.7x4.8 【请全部用递等式计算】 0.41x1.59-4.83x0.59+4.42X0.59

Question

O(∩_∩)O谢谢，孩子的题目真的越来越烦了

Answer 1

6.47x52+64.7x4.8
＝6.47x52+6.47x48
＝6.47x(52+48)
=6.47x10
=647

0.41x1.59-4.83x0.59+4.42X0.59
=0.41x1+0.41x0.59-4.83x0.59+4.42X0.59
=0.41+0.59x(0.41-4.83+4.42)
=0.41+0
=0.41