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六年级数学训练题:分数的计算(一)
巩固练习:
(1)1/3=1/( )+1/( )=1/( )+1/( )
(2)1/4=1/( )+1/( )=1/( )+1/( )
(3)1/5=1/( )+1/( )=1/( )+1/( )
(4)1/12=1/( )+1/( )=1/( )+1/( )
六年级数学训练题:分数的计算(二)
巩固练习:
(1)1/2=1/( )+1/( )+1/( )
(2)1/12=1/( )+1/( )+1/( )
(3)1/20=1/( )+1/( )+1/( )
(4)1/16=1/( )+1/( )+1/( )
(5)1/30=1/( )+1/( )+1/( )
六年级数学训练题:分数的计算(三)
巩固练习:
(1)1/1×2+1/2×3+1/3×4+1/4×5+1/5×6+……+1/49×50
(2)1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90
(3)1-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90
(4)2/12×14+2/14×16+2/16×18+2/18×20+1/20
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