Question

合理计算78x64+78x35+78等于多少？

Answer 1

78*64+78*35+78=78*64+78*35+78*1=78*（64+35+1）=78*100=7800.

Answer 2

78*64+78*35+78运用乘法结合律可以简便计算，78*（64+35+1）＝7800

Answer 3

合理计算78×64+78×35+78＝78×（64+35+1）＝78×100＝7800

Answer 4

Answer 5

78*(64+35+1)=78*100=7800