Question

58x58+58x42用递等式计算(简便计算)

Answer 1

58×58+58×42=58×(58+42)=58×100=5800
两种方法计算上面是一种下面是一种

58x（58+42）=58x100=5800

Answer 2

=58×(58+42)
=58×100
=5800

Answer 3

58×58+58×42
=58×(58+42)
=58×100
=5800

Answer 4

58x（58+42）=58x100=5800

Answer 5

58×58+58×42
=58×(58+42)
=58×100
=5800