Question

65×142-42×65简便计算。

Answer 1

65×142-42×65
=65×（142-42）
=65×100
=6500

Answer 2

=65×(142-42)
=65×100
6500

Answer 3

＝65x(142-42) ＝65×100. =6500

Answer 4

65×（142－42）
＝65×100
＝6500
望釆纳

Answer 5

＝（142-42）x65＝100x65＝6500