求一道数学简算题2.5*4.6+0.25*46

等于 23

=25*4.6+25*4.6
=25*9.2
=25*9+25*0.2
=225+5
=230
饿,请问一下您现在的年级

2.5*4.6+0.25*46
=2.5*4.6+2.5*4.6
=（2.5+2.5）*4.6
=5*4.6
=23

2.5*4.6+0.25*46
=2.5*4.6+2.5*4.6
=2*2.5*4.6
=23

2.5*4.6+0.25*46
=2.5×4.6+（0.25×10）×（46÷10)
=2.5×4.6+2.5×4.6
=2.5×（4.6+4.6）
=2.5×9.2
=23