Question

0.77x99怎样简便计算，急急

Answer 1

0.77x99怎样简便计算，急急
=0.77×（100-1）
=0.77×100-0.77
=77-0.77
=76.23
望采纳 谢谢~~

Answer 2

0.77×99
=0.77×（100-1）
=0.77×100-0.77
=77-0.77
＝76.23
就是把不是整百的数先变成整百数，然后再用乘法分配律计算就比较简便。

Answer 3

先用0.77乘100，再减去一个0.77，即：
=0.77×(100-1)
=0.77×100-0.77
=77-0.77
=76.23

Answer 4

答，原式＝0.77×（100-1）＝0.77×100-0.77X1＝77-0.77＝76.23

Answer 5

0.77x99怎样简便计算
0.77x（100-1）
=0.77x100-0.77
=77-0.77
=76.23