Question

53x54+54x16+69x25+21x25的简便计算方法

Answer 1

53x54+54x16+69x25+21x25
=54×（53+16）+25×（69+21）
=54×69+25×90
=3726+2250
=5976；

请好评

如果你认可我的回答，敬请及时采纳，
~如果你认可我的回答，请及时点击【采纳为满意回答】按钮~
~手机提问的朋友在客户端右上角评价点【满意】即可。
~你的采纳是我前进的动力~~
O(∩_∩)O，记得好评和采纳，互相帮助

Answer 2

53x54+54x16+69x25+21x25
=54x54+54x16-54+68x25+20x25+25+25
=70*54+88*25-4
=3500+280+2000+200-4
=5500+480-4
=5976

Answer 3

54（53+16）+25（69+21）=

Answer 4

解：
53x54+54x16+69x25+21x25=
(53+16)X54+(69+21)x25
=69X54+90X25
=(70-1)X(50+4)+(100-10)X25
=3500+280-50-4+2500-250
5976