1. The numbers from 1 to 50 are written. How many of them contain the digit 4?

2. One notebook and two pencils cost $4. Two notebooks and one pencil cost $5. How much is one pencil?

3. There are 20 animals in a barn—some chickens and some cows. There are 56 legs in total. How many cows are there?

4. Every 3rd locker is blue. Every 4th locker is tall. How many lockers from 1 to 60 are both blue and tall?

5. A pattern of tiles goes red, red, green, green, red, red, green, green… What color is the 45th tile?

Set a 30-minute timer and solve the problems. This test is designed to resemble a MOEMS contest with the subjects you have learned so far.