$\frac{1}{8}+\frac{3}{4}=$  

 $\frac{3}{4}+\frac{3}{20}=$  

 $\frac{6}{7}+\frac{3}{4}=$  

 $\frac{1}{9}+\frac{2}{3}=$  

 $\frac{3}{6}+\frac{2}{9}=$  

 $\frac{1}{6}+\frac{5}{12}=$  

 $\frac{1}{5}-\frac{2}{5}=$  

 $\frac{1}{4}-\frac{1}{6}=$  

 $\frac{7}{8}-\frac{2}{3}=$  

 $\frac{4}{5}-\frac{3}{10}=$  

 $\frac{8}{9}-\frac{1}{3}=$  

A businessman had 60 guavas. He sold 2/3 of them to a public market, 1/4 of them to a store and kept the rest for his child. How many guavas did he keep for his child?

Andrew rode his bicycle for 2 1/2 hours on Saturday and 1 1/4 hours on Sunday. How many hours in all did he ride?

A group of hunters went out hiking. They walked 4 1/5 km to a forest then took a different route in going back, walking 2 3/10 km. How much longer was the trip to the forest than the trip back?

A farmer used 1/6 of his garden for planting eggplants; 1/3 for cabbages, and 1/6 for string beans. What fraction of his garden is left for other vegetables?

 $3-\left(\frac{2}{3}+\frac{4}{5}+1\right)=$