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精选优质文档-倾情为你奉上六年级上册数学分数乘法计算题20= = 14= = ()12= 13= 39=10= 8= 3= 6=8= 2 = 7= 18=5= 7= 13= 15=3= 2= 4= 3= 6= 6= 14= 10=4= 8= 6= 5= 7= 12= 12= 15=3= 6= 22= =2= 25= 4= 18=2= 3= 1= 4= 2= 5= 3= 18= = 20= 10= 6= = 10= 2= 10=3= = = = = = 5= = = = = = = += = = = = 4= = = 2 4+1 + - 42+ + 0 7-12 2+ -1 0+ - - + (3+)2 (+)6 (+)6(+)15 121-70 (3+)2 (8+)3(8+)3 1+ - (+)18 (+)9 (14+)4 (+)27 (86+1)4(+) (3+) (+)21 (+)12(+)14 (+)18 (-)6(+) (+)6 (3+)14 4(+)21-17 12 (7+) -(+) -8 (+) - 5 7+9 + 18-12 7- -2 10- (+)15 (17+)13 (-)12 (16+1)专心-专注-专业