1/6:1/5:2/9=():():()写出最小整数比,计算过程最好清楚点,

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1()2()3()4()5()6()7()8()9=36填“+”,“-” 12345679×(9×1+1)=123456790有什么发现?12345679×(9×2+1)=23456790112345679×(9×3+1)=34567901212345679×(9×4+1)=45679012312345679×(9×5+1)=56790123412345679×(9×6+1)=679012345 (1/2-5/9+5/6)x(-36) 9()2()7()8()()()()4()()9()6()1 3()5()()()()24()()8 5()()1()()8 9 4()1 6 7()()1()()3 6()()88()()()()2()3 6()5 计算:(有理数的加法)(-10)+(+6)=(+12)+(-4)=(-5)+(-7)=(+6)+(-9)=(-0.9)+(-2.7)=2/5+(-3/5)=(-1/3)+2/5=(-三又四分之一)+(-一又十二分之一)(-8)+10+2+(-1)=5+(-6)+3+9+ -1+(-2)+(-3)+4+5+6+(-7)+(-8)+(-9)+.+2008+2009+2010=? 急要!①(3/4+1/5)+(4/5+1/6)+(5/6+1/7)+(6/7+1/8)+(7/8+1/9)=?②1+(-2)+3+①(3/4+1/5)+(4/5+1/6)+(5/6+1/7)+(6/7+1/8)+(7/8+1/9)=?②1+(-2)+3+(-4)+5+(-6)+……+99+(-100)=?急要! 1/9{1/7(1/5((x+4)/3+2)+6)+8}=1 (1+2/1)(1+4/1)(1+6/1).(1+10/)(1-3/1)(1—5/1).(1-9/1) (1+1*3分之1)(1+2*4分之1)(1+3*5分之1)(1+4*6分之1)…(1+9*11分之1)(1+1*3分之1)*(1+2*4分之1)*(1+3*5分之1)*(1+4*6分之1)…(1+9*11分之1)=? (+6又1/4)+(+1/2)+(-6.25)+(+1/2)+(-7/9)+(-5/6) 将下列分数拆成诺干个不同分数单位的和(1)1=1/()+1/()+1/()+1/()(2)5/6=1/()+1/()+1/()(3)1/9=1/()+1/()+1/()+1/()(4)1=1/()+1/()+1/()+1/()+1/()+1/()(括号中要小于20) (6/5-9/5)除以(1/2+7/18)=? (2-3)-(5*7-8)+11-(9-6-4)*(3+1)= (1/2-3)*(1-1/2-1/3)*(-1-1/2)*(-4)*(-2-1/3)-(-4)*(-1/8)*(2-1-1/3)*(2-1-1/3)*(2+1/3-1/2)=有负数和绝对值感激不尽 ()12+()11+()10+()9+()8+()7+()6+()5+()4+()3+()2+()1=0括号里填+/-巧填算式:10+4=6+()=7+()=9+()15-10=9-( )=8-( )=2+()9+9=10+( )=( )+4=7+( ) 根据(n-1)(n+1)+1=n的平方,计算(1+1/1*3)(1+1/2*4)(1+1/3*5)(1+1/4*6).(1+1/9*11) 要过程(-2)×5/4×(-9/10)×(-2/3)=?(-6)×5×(-7/6)×2/7=?(-4)×7×(-1)×(-0.25)=? 1/1+(1/1+2)+(1/1+2+3)……+(1/1+2+3+4+5+6+7+8+9+10+11)=