Addition and Subtraction

Raju has 5 mangoes 🍎. He buys 3 more mangoes. How many mangoes does Raju have now?

There are 10 birds 🐦 on a tree. 4 birds fly away. How many birds are left on the tree?

A farmer has 12 cows 🐄. He sells 5 cows. How many cows does he have now?

Meena had 15 sweets 🍬. She gave 7 sweets to her friend. How many sweets does Meena have now?

In a basket, there are 20 apples 🍏 and 15 oranges 🍊. How many fruits are there in total?

A train has 50 passengers. At the first station, 18 passengers get down. At the next station, 12 passengers get down. How many passengers are left in the train?