数学
五年级计算题简算:(8/15+7/12+11/30)*60 3.625*7.75+3.625*1.25+3.625 9*2/7+5/9*9 12*(1/4+1/6-1/3)解方程:0.25x+1/2=1 1/3x-4=601.9-(x+1/2)=1/5 9.8-2x=0.2 脱式计算:4除以{5/6+(10-3/10)/1/4}{2+(4-15%)}/45 (1-3)*9/4除以{(1+1/3/4/9)} 8/15除以0.32-5/7*0.42

2019-04-14

五年级计算题
简算:(8/15+7/12+11/30)*60 3.625*7.75+3.625*1.25+3.625 9*2/7+5/9*9 12*(1/4+1/6-1/3)解方程:0.25x+1/2=1 1/3x-4=60
1.9-(x+1/2)=1/5 9.8-2x=0.2 脱式计算:4除以{5/6+(10-3/10)/1/4}
{2+(4-15%)}/45 (1-3)*9/4除以{(1+1/3/4/9)} 8/15除以0.32-5/7*0.42
优质解答
(8/15+7/12+11/30)*60=8*4+7*5+11*2=32+35+22=89
3.625*7.75+3.625*1.25+3.625=3.625*(7.75+1+1.25)=36.25
9*2/7+5/9*9 =18/7+5=53/7
12*(1/4+1/6-1/3)=3+2-4=1
0.25x+1/2=1 X=1/2*4=2
1/3x-4=60 X=56*3=168
1.9-(x+1/2)=1/5 X=1.9-0.2-0.5=1.2
9.8-2x=0.2 X=9.6/2=4.8
4/{5/6+(10-3/10)/1/4}=4/(5/6+38.8)=24/5+155.2=160
{2+(4-15%)}/45=5.85/45=113/900
(1-3)*9/4/{(1+1/3/4/9)}=1-3负数,题错
8/15除以0.32-5/7*0.42 =1/(15*0.04)-5*0.06=5/3-0.3=41/30
(8/15+7/12+11/30)*60=8*4+7*5+11*2=32+35+22=89
3.625*7.75+3.625*1.25+3.625=3.625*(7.75+1+1.25)=36.25
9*2/7+5/9*9 =18/7+5=53/7
12*(1/4+1/6-1/3)=3+2-4=1
0.25x+1/2=1 X=1/2*4=2
1/3x-4=60 X=56*3=168
1.9-(x+1/2)=1/5 X=1.9-0.2-0.5=1.2
9.8-2x=0.2 X=9.6/2=4.8
4/{5/6+(10-3/10)/1/4}=4/(5/6+38.8)=24/5+155.2=160
{2+(4-15%)}/45=5.85/45=113/900
(1-3)*9/4/{(1+1/3/4/9)}=1-3负数,题错
8/15除以0.32-5/7*0.42 =1/(15*0.04)-5*0.06=5/3-0.3=41/30
相关问答