Class 3 olympiad maths

If water Teacher is Doctor, Doctor is Barber, Barber is Carpenter, Then who teaches us?

Find the missing number to complete this equation.
? + 122 + 78 + 35 = 269

Raja puts 60 plates in the 1st Shelf, 70 plates in the 2nd shelf and 80 plates in the 3rd shelf. If this pattern continues, Then how many plates will he put in the 5th shelf?

If a bus travels 90 km in 2 Hours, then what is the speed of the bus?

Observe the figure carefully. There are certain number of boys and girls had eaten different types of foods as shown in this image. How Many Girls had eaten Chocolate, Pizza and ice-cream all together?

Sagarika has 9 bracelets. She lost 1/3 of her bracelets. She purchased another 10 bracelets. How many bracelets does she have now?

Indra introduces Praveen as the son of the only brother of his father's wife. How is Praveen related to Indra?

Which butterfly represents the largest value?

25 Tens + 350 Ones = ?

One fine evening, Mugdha & Ankita were talking to each other face to face. If Ankita's shadow was exactly to the right of Ankita, Which direction was Mugdha facing?