Question

37×62+39×39-37简便计算？

Answer 1

37ⅹ62+39ⅹ39一37
=37ⅹ62+(37+2)x39一37
=37ⅹ62+37ⅹ39+2x39一37
=37x(62+39)+78一37
=37ⅹ101+78一37
=37ⅹ(100+1)+41
=3700+37+41
=3778

Answer 2

解，原式=37x62+39x(37+2)-37x1
=37x62+39x37+39x2-37x1
=37x(62+39-1)+78
=37x100+78
=3700+78
=3778

Answer 3

解：
原式＝37×62＋39×39-37
＝37×（62-1）＋（37＋2）×39
＝37×61+37×39＋2×39
＝37×（61＋39）＋78
＝37×100＋78
＝3778

Answer 4

37×62+39×39-37
=37×(62-1)+39×39
=37×61+39×39
=(39-2)×61+39×39
=39×61-2×61+39×39
=39×(61+39)-122
=39×100-122
=3900-122
=3778
请采纳，谢谢。

Answer 5

37×62+39×39-37
=37×62+37×38+115-37
=37×（62+38）+78
=37×100+78
=3700+78
=3778.