Bài 1 trang 158 SGK Toán 5

Tính:

a) \(889972 + 96308\);                                    b) \(\dfrac{5}{6} + \dfrac{7}{12}\);

c)  \(3+\dfrac{5}{7}\);                                                    d) \(926,83 + 549,67\). 

Lời giải

a) \(889972 + 96308 = 986280\) ;

b) \(\dfrac{5}{6} + \dfrac{7}{12}  = \dfrac{10}{12} + \dfrac{7}{12} = \dfrac{17}{12}\) ;

c)  \(3+\dfrac{5}{7} = \dfrac{21}{7}+ \dfrac{5}{7} = \dfrac{26}{7}\) 


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