简便方法计算 7/2÷4+360×25％+0.25×36.5 （7.25×40％+2.75×2/5）÷20％
简便方法计算 7/2÷4+360×25％+0.25×36.5 （7.25×40％+2.75×2/5）÷20％
7/2÷4+360×25％+0.25×36.5
=7/2×1/4+360×1/4+1/4×36.5
=(7/2+360+36.5)×1/4
=400×1/4
=100
（7.25×40％+2.75×2/5）÷20％
=（7.25×40％+2.75××40％）×5
=（7.25+2.75）×40％×5
=10×40％×5
=20
【1.9+19％×（4.8-19/5）】÷（29/10-190％）
=【1.9+19％×（24/5-19/5）】÷（29/10-19/10）
=【1.9+19％×（5/5）】÷（10/10）
=【1.9+0.19】÷1
=2.09
7/15-7/15x34/35和3.5÷4+360×25%+0.25×36.5的简便运算
7/15-7/15x34/35
=7/15*(1-34/35)
=7/15*1/35
=1/15*1/5 (7与35约分得）
=1/75
3.5÷4+360×25%+0.25×36.5
=35/40+360/4+36.5/4
=35/40+90+365/40
=(35+365)/40+90
=400/40+90
=10+90
=100
用简便方法计算六年级:31/2除4+360乘25百分号+0.25乘36.5
用简便方法计算六年级:
31/2÷4+360×25%+0.25×36.5
=15.5×0.25+360×0.25+0.25×36.5
=（15.5+360+36.5）×0.25
=412×0.25
=103
3又2分之1除以4+360乘25%+0.25乘36.5用简便方法算？
3又2分之1除以4+360乘25%+0.25乘36.5
=3.5x1/4+360x1/4+36.5x1/4
=(3.5+360+36.5)x1/4
=400x1/4
=100
用简便方法计算24+(60/7—2/5)—25/7
用简便方法计算24+(60/7—2/5)—25/7
24+(60/7—2/5)—25/7
=24-2/5+60/7-25/7
=24-2/5+5
=28又3/5
(7又2/5)^2-2.4^2用简便方法计算
(7又2/5)^2-2.4^2
=7.4^2-2.4^2
=(7.4+2.4)(7.4-2.4)
=9.8*5
=49
7/2+0.25-14/5用简便法如何计算
答：7/2+0.25-14/5
=3.5+0.25-2.8
=3.75-3+0.2
=0.75+0.2
=0.95
(1.25-(7/8))/((2/5)+0.25)简便计算 （1.25－7/8）÷（2/5＋0.25） 再看不懂我没办法了.
（1.25－7/8）÷（2/5＋0.25）
=3/8÷13/20
=15/26
18/25－（0.36÷1/2－4/9）
=0.72-0.72+4/9
=4/9
1÷[0.1＋（3又1/10－3.09）×10]
=1÷[0.1+0.01×10]
=1÷0.2
=5
用简便方法计算,105×2/7-2/7÷1/21
105×2/7-2/7÷1/21
=105×2/7-2/7x21
=2/7x（105-21）
=2/7x84
=2x12
=24
谢谢，请采纳
