Question

99×78+33×66用乘法分配律计算怎么计算?

Answer 1

99×78+33×66
=99×78+99*22
=99*（78*22）
=99*100
=9900

Answer 2

99×78+33×66
=99×78+33×3×22
=99×78+99×22
=99×(78+22)
=99×100
=9900