9分之8乘以【4分之3减(16分之7减0.25)】简算啊!
1个回答
展开全部
8/9 X [3/4-(7/16-0.25)]
=8/9X[3/4-(7/16-1/4)]
=8/9X[3/4-(7/16-4/16)]
=8/9X(3/4-3/16)
=8/9X3/4-8/9X3/16
=2/3-1/6
=4/6-1/6
=3/6
=1/2
=8/9X[3/4-(7/16-1/4)]
=8/9X[3/4-(7/16-4/16)]
=8/9X(3/4-3/16)
=8/9X3/4-8/9X3/16
=2/3-1/6
=4/6-1/6
=3/6
=1/2
追问
简算:5分之49加5分之499加5分之4999加5分之3
追答
5分之49加5分之499加5分之4999加5分之3
=49/5+499/5+4999/5+3/5
=1/5(49+499+4999+3)
=1/5(49+1+499+1+4999+1)
=1/5(50+500+5000)
=1/5 X 5550
=1110
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