数学问题
1.计算下面各题,能简便计算的要简便计算。30-432/(18*6)0.15+(3.74-1.8)/0.4125+675/25*1813.2-(3.2-2.4-0.45)...
1.计算下面各题,能简便计算的要简便计算。
30-432/(18*6) 0.15+(3.74-1.8)/0.4
125+675/25*18 13.2-(3.2-2.4-0.45)
4.5*0.5+5.5/2 3.2*25*1.25
1.25/4*8/四分之一 展开
30-432/(18*6) 0.15+(3.74-1.8)/0.4
125+675/25*18 13.2-(3.2-2.4-0.45)
4.5*0.5+5.5/2 3.2*25*1.25
1.25/4*8/四分之一 展开
2个回答
展开全部
30-432/(18*6)
=30-4
=26
0.15+(3.74-1.8)/0.4
=0.15+1.94/0.4
=0.15+4.85
=5
125+675/25*18
=125+1.5
=126.5
13.2-(3.2-2.4-0.45)
=13.2-3.2+2.4+0.45
=10+2.4+0.45
=12.85
4.5*0.5+5.5/2
=1/2(4.5+5.5)
=1/2*10
=5
3.2*25*1.25
=80*1.25
=100
1.25/4*8/(1/4)
=(1.25/4*8)*4
=1.25/8
=0.15625
=30-4
=26
0.15+(3.74-1.8)/0.4
=0.15+1.94/0.4
=0.15+4.85
=5
125+675/25*18
=125+1.5
=126.5
13.2-(3.2-2.4-0.45)
=13.2-3.2+2.4+0.45
=10+2.4+0.45
=12.85
4.5*0.5+5.5/2
=1/2(4.5+5.5)
=1/2*10
=5
3.2*25*1.25
=80*1.25
=100
1.25/4*8/(1/4)
=(1.25/4*8)*4
=1.25/8
=0.15625
本回答被提问者采纳
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询