数学简算题4道一.45*2.08+1.5*37.6二.52*11.1+2.6*778三.48*1.08+1.2*56.8四.72*2.09-1.8*73.6
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 08:48:53
![数学简算题4道一.45*2.08+1.5*37.6二.52*11.1+2.6*778三.48*1.08+1.2*56.8四.72*2.09-1.8*73.6](/uploads/image/z/596387-11-7.jpg?t=%E6%95%B0%E5%AD%A6%E7%AE%80%E7%AE%97%E9%A2%984%E9%81%93%E4%B8%80.45%2A2.08%2B1.5%2A37.6%E4%BA%8C.52%2A11.1%2B2.6%2A778%E4%B8%89.48%2A1.08%2B1.2%2A56.8%E5%9B%9B.72%2A2.09-1.8%2A73.6)
数学简算题4道一.45*2.08+1.5*37.6二.52*11.1+2.6*778三.48*1.08+1.2*56.8四.72*2.09-1.8*73.6
数学简算题4道
一.45*2.08+1.5*37.6
二.52*11.1+2.6*778
三.48*1.08+1.2*56.8
四.72*2.09-1.8*73.6
数学简算题4道一.45*2.08+1.5*37.6二.52*11.1+2.6*778三.48*1.08+1.2*56.8四.72*2.09-1.8*73.6
一.45*2.08+1.5*37.6
=1.5*62.4+1.5*37.6
=1.5*(62.4+37.6)
=1.5*100
=150
二.52*11.1+2.6*778
=2.6*222+2.6*778
=2.6*(222+778)
=2.6*1000
=2600
三.48*1.08+1.2*56.8
=1.2*43.2+1.2*56.8
=1.2*(43.2+56.8)
=1.2*100
=120
四.72*2.09-1.8*73.6
=1.8*83.6-1.8*73.6
=1.8*(83.6-73.6)
=1.8*10
=18
不知道