(1)1-2/1-20/1-200/1-2000/1-20000/1-200000/1
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(1)1-2/1-20/1-200/1-2000/1-20000/1-200000/1
(2)99又4/3+199又4/3+2999又4/3+39999又4/3+1
(2)99又4/3+199又4/3+2999又4/3+39999又4/3+1
(1)1-2/1-20/1-200/1-2000/1-20000/1-200000/1
=(200000-100000-10000-1000-100-10-1)/200000
=(200000-111111)/200000
=89999/200000
(2)99又4/3+199又4/3+2999又4/3+39999又4/3+1
=(100+200+3000+40000)-1/4×4+1
=43300
=(200000-100000-10000-1000-100-10-1)/200000
=(200000-111111)/200000
=89999/200000
(2)99又4/3+199又4/3+2999又4/3+39999又4/3+1
=(100+200+3000+40000)-1/4×4+1
=43300
(1)1-2/1-20/1-200/1-2000/1-20000/1-200000/1
1-1/2-1/20-1/200-1/2000-1/20000
1+10+100+1000+10000+2+20+200+2000+20000
1+200+10+2000+100+20000=?
20000(1+40%)=20000-x+(4x+2000)
(1/2+1/3+...+1/2000)*(1+1/2+...+1/1999)-(1+1/2+...+1/2000)*(
200*(1-1/2)*(1-1/3)*(1-1/4)*.*(1-1/100)
1 1 1 1 1(1- -)(1- -)(1- -)...(1- - )(1- - )=?2 3 4 2007 200
脱式计算:1减2分之1减20分之1减200分之1减2000分之1
如何计算:(1-1/2*2)(1-1/3*3)(1-1/4*4)(1-1/5*5)、、、(1-1/2000*2000)拜
(1-1/2)*(1-1/3)*(1-1/4)*(1-1/5)*(1-1/6)*…*(1-1/19)*(1-1/20)=
(1-1/2)+(1/2-1/3)+(1/3-1/4).+(1/1999-1/2000)