问题
解答题
320+330+340+350=______×______.
答案
320+330+340+350,
=(335-15)+(335-5)+(335+5)+(335+15),
=(335+335+335+335)+(5-5+15-15),
=335+335+335+335,
=335×4.
故答案为:335,4.
320+330+340+350=______×______.
320+330+340+350,
=(335-15)+(335-5)+(335+5)+(335+15),
=(335+335+335+335)+(5-5+15-15),
=335+335+335+335,
=335×4.
故答案为:335,4.