2. Find the rules for filling numbers: ① 1 1, 12, 14,18,26 ().

② 1,2,2,4,8,32( )。

3, six consecutive natural numbers, the sum of the first three numbers is 60, then the sum of the last three numbers is ().

4. The sum of numbers A, B and C is 1 16, and the number A divided by the number B and the number C divided by the number A are all quotient 2 and 1, so the number B is ().

A store stipulates that three empty soda bottles can be exchanged for one soda bottle. Xiao Ming bought eight bottles of soda, and after drinking, he exchanged the empty soda bottles for soda. He can drink 100 bottles of soda as soon as he gets up.

7. The dividend is 3320, the quotient is 150, the remainder is 20 and the divisor is ().

8. Fill in parentheses in the following formula to make the equation hold.

5 × 8 + 16 ÷ 4 – 2 = 20

9. There are 125 students in the third grade of Guanghua Road Primary School participating in the entrance ceremony of the sports meeting. There are five of them in a row, with a distance of 2 meters from front to back and a chairman of 42 meters. They passed the rostrum at a speed of 45 meters per minute, which took () minutes.

10, the existing pine and cypress trees are planted in squares with 9 rows and 9 columns by the method of planting every other tree. Are there any pines and cypresses in this square?

1 1, grain depot a and grain depot b originally stored 320 tons of rice. Later, 40 tons were shipped from Grain Depot A and 20 tons were shipped to Grain Depot B. At this time, the rice in Grain Depot A was twice as much as that in Grain Depot B. Grain Depot A originally stored () tons of rice, and Grain Depot B originally stored () tons of rice.

12. There is a circular runway with a length of 690 meters. Both parties start from the starting point at the same time. Party A walks 60 meters per minute and Party B walks 55 meters per minute. () Hours later, Party A caught up with Party B for the first time.