www.zhnq.net > 24÷(1/4一1/6)=,1/3÷[1/7×(1/15÷2/7)]=

24÷(1/4一1/6)=,1/3÷[1/7×(1/15÷2/7)]=

24÷(1/4一1/6) =24÷(1/12) =24X12 =288 1/3÷[1/7×(1/15÷2/7)] =1/3÷(1/7X7/2X1/15) =1/3÷(1/30) =1/3X30 =10

24×(2/3一3/8+5/12) =24x2/3-24x3/8+24x5/12 =12x2-3x3+2x5 =24-9+10 =25 6×7/11+6÷11/4 =6/11x(7+4) =6/11x11 =6

上下两边同时乘以60再算

一又3/4÷(5/6)-1/4÷(7/8)-1/2 =21/10-2/7-1/2 =46/35 =1又11/35

=7÷[4/11×11/12] =7÷1/3 =21

(127+133)+240+184

6÷2/7-6÷1/5=6X7/2-6X5=-9

=7/8+2/3x5/4+1/6 =7/8+5/6+1/6 =7/8+1=15/8 =1又7/8

1÷7、2÷7,3÷7,4÷7、5÷7,6÷7。算出以上各题。你发现了什么? 1/7=0.142857142857…… 2/7 = 0.285714285714…… 3/7 = 0.428571428571…… 4/7 = 0.571428571428…… 5/7 = 0.714285714285…… 6/7 = 0.857142857142…… 都是142857这六个数的排列组成的有...

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