Question

0.78x98简便计算

0.78x98简便计算

Answer 1

0.78x98

=0.78×（100-2）
=78-1.56
=76.44

Answer 2

0.78 x 98
= 0.78 x （100 - 2）
= 0.78 x 100 - 0.78 x 2
= 78 - 1.56
= 77 44