五年级数学下双休日作业2013/5/3
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:丁大勇班级姓名一、方程1.等式两边同时(),所得结果仍然是等式,这就是等式的性质(一)。2.等式两边同时(),所得结果仍然是等式,这就是等式的性质(二)。3.解方程。X+56=102 x-970=2706.6+x=24.520x=160 15x=3 x÷0.8=1.25二、最大公因数和约分1.直接写出每组数的最大公因数。(18,12)= (18,30)= (15,20)= (8,10)=(8,20)= (10,20)= (12,42)= (6,27)=(10,35)= (24,42)= (30,40)= (6,9)=(10,6)= (20,30)= (13,5)= (60,12)=(13,65)= (17,51)= (95,38)= (60.36)=(20,12)= (45,30)= (18,45)= (91,26)=2.将下列分数约成最简分数。= = = = = == = = = = == = = = = == = = = = == = = = = =3.直接写出每组数的最小公倍数。[2,4]= [6,10]= [4,7]= [5,8]= [10,4]= [6,8]=[4,9]= [6,12]= [10,3]= [8,10]= [12,10]= [12,18]=[6,9]= [8,9]= [5,9]= [6,14]= [45,15]= [20,30]=4.把下面每组分数通分。和和和和和和和和和和和和家长签名: