Question

48*1.08+1.2*56.8 要简便方法，谢谢了！

48*1.08+1.2*56.8
要简便方法，谢谢了！

Answer 1

48*1.08+1.2*56.8
=12*4*1.08+1.2*56.8*10/10
=12*（4*1.08）+（1.2*10）*（56.8/10）
=12*4.32+12*5.68
=12*(4.32+5.68)
=12*10
=120

或者
48*1.08+1.2*56.8
=（1.2*40）*1.08+1.2*56.8
=1.2*（40*1.08）+1.2*56.8
=1.2*43.2+1.2×56.8
=1.2*（43.2+56.8）
=1.2*100
=120

Answer 2

48*1.08+1.2*56.8
=1.2×40×1.08+1.2×56.8
=1.2×43.2+1.2×56.8
=1.2×（43.2+56.8）
=1.2×100
=120