-2.5+(-1/5) 0.4-(-1/4)+1/6 1/3-(-5/6)+2/3 1/3+(-1/5)+1+2/3= = = == = = =27-18+(-7)-32 0.5+(-1/4)-(-2.75)+1/2= == =
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-2.5+(-1/5) 0.4-(-1/4)+1/6 1/3-(-5/6)+2/3 1/3+(-1/5)+1+2/3= = = == = = =27-18+(-7)-32 0.5+(-1/4)-(-2.75)+1/2= == =
-2.5+(-1/5) 0.4-(-1/4)+1/6 1/3-(-5/6)+2/3 1/3+(-1/5)+1+2/3
= = = =
= = = =
27-18+(-7)-32 0.5+(-1/4)-(-2.75)+1/2
= =
= =
-2.5+(-1/5) 0.4-(-1/4)+1/6 1/3-(-5/6)+2/3 1/3+(-1/5)+1+2/3= = = == = = =27-18+(-7)-32 0.5+(-1/4)-(-2.75)+1/2= == =
-2.5+(-1/5) 0.4-(-1/4)+1/6 1/3-(-5/6)+2/3 1/3+(-1/5)+1+2/3
=-2.5-0.2 =13/20+1/6 =7/6+4/6 =2/15+1+10/15
=-2.7 =49/60 =11/6 =9/5
27-18+(-7)-32 0.5+(-1/4)-(-2.75)+1/2
=27-18-7-32 =0.5-0.25+2.75+0.5
=-30 =3.5
找规律 6.25 2.5 1 0.4 ( ) ( )
找规律 2.5 1 0.4 ( ) ( ) 0.256
-1的5次幂-【(-0.4)*(-2.5)】的5次幂
简算:1除以2.5+2.5乘0.4-1.4
、找规律,再填空:1/2 ,0.2 ,2.5 ,0.4 ,9/2,3/5,( ),( ).
2.5*3/7*0.4*2又1/5怎么简算
2.5与0.4的积乘以2.5除0.4的商,积是多少?2.5×0.4×2.5÷0.4=1×6.25=6.25
24除以6等于0.4 6除以2.4等于2.5 2.5*0.4等于1
0.4乘以2.5等于1 所以0.4和2.5互为倒数这句话对吗?
1、解比例.X:40=2.5:4 1 14 :X=0.4:8 X3.5= 40.
0.4*2.5=1 可以说互为倒数吗 为什么 原因
0.2分之x+3-0.4x-1=-2.5
0.2分之0.1x+0.3+2.5=0.4x-1
(x+3)/2-(0.4x-1)/0.5=-2.5
根据运算定律填空【1】0.4×【】×2.5=12×【】×【】
按规律填数2.5,1,0.4,( )0.064,( )
按规律填数 2.5 1 0.4 ( ) ( ) 0.0256
(能简算的要用简便方法计算) 1÷2.5+2.5*0.4+1简便