Question

5.2乘2.3加58乘2.3减2.3等于多少,用简便方法

Answer 1

5.2+58=63.2x2.3=145.36-2.3=143.06 如是5.8 5.2+5.8=11X2.3=25.3-2.3=23

Answer 2

58还是5.8？

追答

5.2*2.3+5.8*2.3-2.3
=2.3*（5.2+5.8-1）
=2.3*10
=23