The teacher bought a sticker for each of her students. There are 30 students in her class. If she gave 15 away, how many does she have left?
Ram is reading a story book containing 260 pages. He has completed reading 180 pages. How more pages should he read to complete the book?
Rita’s had Rs. 150. She wanted to buy a doll that costs Rs. 230. How much more money does she need to buy the doll?