Question

37×62+39×39-37简便计算？

Answer 1

你好，等式 37*62+39*39-37=37*62+39*（40-1）-37*1=37*（62-1）+1560-39=37*61+1560-39=2257+1560-39=3778

Answer 2

计算过程：
=37x(62-1)+(40-1)x(40-1)
=37x61+1600-40-40+1
=37x(60+1)+1600-80+1
=2220+37+1600-80+1
=3778

Answer 3

37×62+39×39-37=37×62-37+39×(37+2)=37×(62-1)+39×37+39×2=37×61+37×39+39×2=37×(61+39)+78=3778

Answer 4

原式=37*61+37*39+2*39
=37*100+78
=3778

Answer 5

37×62+39×39-37
=37×62+（37+2）×（37+2）-37
=37×62-37+37x37+37x2+37x2+4
=37x(62-1+37+2)+37x2+4
=37x100+74+4
=3700+78
=3778