1. Fill in the blanks 68% (1) Fill in the blanks regularly: 1, 2,4,7, 1,16,22, ()198,297,32. (3) A two-digit number, where the number in one digit is greater than the number in the tenth digit 1. After exchanging the position of the single digit and the tenth digit, a new two-digit number is obtained. If the sum of the original number and the new number is 99, this two-digit number is (). (4) After rearranging a three-digit number, the difference obtained by subtracting the smallest three-digit number from the largest three-digit number is exactly equal to the original three-digit number. These three digits are () (5) a number minus 2487. In the careless calculation, the number of the minuend and the number on the tenth place were wrongly exchanged, and the result was 8439. The correct number should be () (6) clock 1 one o'clock to knock 65448. From 1 to 12, the clock struck () within 12 hours. (7) Divide 50 into two different singular numbers and there are () methods. (8) There are 1, 2, 3, 4 and 4 numbers used twice to form an octet. It requires a number between two 1, two numbers between two 2' s, three numbers between two 3' s and four numbers between two 4' s. This octet is () or (). (9) The colored lights on the building are arranged and combined in the order of red, yellow, blue, green and purple, and there are 37 light bulbs in a * * *. Think about it: the color of the 20th light bulb is (), and the color of the last light bulb is (). (10) This year's Children's Day is Tuesday, and this year's National Day is Monday (). (1 1) has three numbers, A, B and C. It is known that the sum of A and B is 168, C is twice the average of A and B, and the average of A, B and C is (). (12) There are () line segments in * * *. A B C D E F G (13) respectively fill in 1, 2, 3, 4, 5, 6, 7, 8 in the eight spaces below, so that the four sides just form four formulas of addition, subtraction, multiplication and division. -=⊙+×= 2, calculate12% (1) 2772 ÷ 28+34965 ÷ 35 (2)12 ÷ 3) ÷. A tour group of 50 people wants to give each person a bottle of mineral water and asks how many bottles they need to buy at least. (2) A batch of ***560 parts were produced, and the master and apprentice cooperated for four days. It is known that the master produces three times as many parts as the apprentice every day. How many parts do the master and apprentice produce every day? (3) There are 20 questions in a math contest * * *, and the scoring standard is: 5 points for each correct answer and 3 points for each wrong answer. Xiaoming took part in the math contest and got 68 points. So how many questions did Xiao Ming do right? (4) The distance between Party A and Party B is 780 meters, and the car starts from Party A, and it is 30 kilometers away from the midpoint after driving for 6 hours. How many kilometers does this car travel per hour?