There is a three digit number. The number on the ten digit is two-thirds of the number on the one digit. The number on the ten digit plus three is equal to the number on the one digit. The number on the hundred digit is the smallest prime number. What is the three digit number?

There is a three digit number. The number on the ten digit is two-thirds of the number on the one digit. The number on the ten digit plus three is equal to the number on the one digit. The number on the hundred digit is the smallest prime number. What is the three digit number?

In other words, the number of tens is 1-2 / 3 less than that of ones = 1 / 3
According to "the number on ten plus 3 is equal to the number on one bit", 1 / 3 of the number on one bit is equal to 3, so the number on one bit is 3 △ 1 / 3 = 9, then the number on ten is 9 × 2 / 3 = 6, and the number on one bit is 1 / 3 = 3;
The smallest prime number is 2, so the number on the hundred is 2;
So, the three digit number is 269

1. It is known that the perimeter of the parallelogram ABCD is 44cm, the height of the ad side is 7cm, and the height of the AB side is 4cm. How many square meters is the area of the parallelogram?
2. There are 30 pairs of badminton rackets, which are distributed to two classes. One third of class A's badminton rackets are equal to one half of class B's?

1.(44-7×2）/2 ×4=60
2. Class a 30 △ 5 × 3 = 18
Class B 30 △ 5 × 2 = 12

Urgent. Write a detailed formula, no problem-solving ideas
1、 Fill in the blanks
(1) 800706502 is read as (), rounded to the place of "ten thousand"
(2) 250 square kilometers = () ha 1 / 6 hours is () hours () minutes
（3）1.2=72/( )=（ ）%.
(4) A timber cut off 150 cm, 1.2 times shorter than the remaining 30 cm, the remaining () cm
(5) Divide the 7-meter-long rope into 6 segments, each segment is () m long, and each segment is () / () of 7-meter long
(6) The bottom radius of a conical container is 5 cm, the height is 1.2 decimeters, and its volume is () cubic centimeter. Fill the conical container with water and pour it into a cylindrical glass bottle with the same bottom area, and the water depth is () cm
(7) In the fruit shop, a kilogram of fruit was sold, and then 1 / 2 kilogram of fruit was sold, a total of () kilogram of fruit was sold
(8) Professor Zhang's salary in September is 2500 yuan. The part over 1000 yuan should pay 5% personal income tax. Professor Zhang should pay () yuan in September
(9) The actual distance between Nanjing and Shanghai is about 300 kilometers. On a map of China, the distance between the two places is only 5 cm. The scale of this map is ()
(10) 2 and 5 / 6 fractional units are (), which have () fractional units
(11) Use a piece of iron wire to weld a 6 cm square frame model. The length of the iron wire is at least () cm. If you want to paste a layer of plastic paper on the surface of the frame, you need at least () square decimeter of plastic paper
(12) Because X / 7 = Y / 6 (x ≠ 0, y ≠ 0), X is proportional to y
(13) There are () common divisors of 24 and 60. The greatest common divisor is decomposed into () prime factor
(14) Xiao Wang received a typing task and finished 40% of the total words in the first 20 minutes. According to this calculation, it took Xiao Wang () minutes to complete the task
(15) To complete a batch of parts, it takes 36 minutes for Party A to do it alone and 45 minutes for Party B to do it alone. The efficiency of () is high and ()%
(16) When a product is 75% off, it is 50 yuan less than the original price. Today's price of this product is () yuan
(17) The perimeter of a rectangle is 48 cm, the ratio of length to width is 5 ∶ 3, and its area is () square cm
(18) Zhang Qiang's mother bought him a sportswear with a price of 140 yuan per set. Zhang Qiang's mother calculated that she could buy 6 coats and 8 pairs of trousers with her money. Zhang Qiang's mother brought () yuan, and each coat was () yuan more expensive than each pair of trousers
2、 Judgment questions
(1) 9.9954 use "rounding method" and "rounding method" to reserve two decimal places, both of which are 10.00
(2) There are 50 students in class 6 (1) taking part in today's exam, and one girl is absent due to illness. The attendance rate of class 6 (1) today is 98%
(3) Because number a is 1 / 4 more than number B, number B cannot be 25% less than number a
(4) The degree ratio of the two inner angles in an isosceles triangle is 1:2. This triangle is not necessarily an acute triangle
(5) A car delivers goods from city a to city B at a speed of 60 kilometers per hour when it goes there and 80 kilometers per hour when it returns, so the average speed of a round trip is 70 kilometers
(1) Liu Xiaodong only moved the decimal point of the divisor one place to the right when doing the calculation of decimal division. He forgot to move the decimal point of the divisor. The result is 10.8 less than the correct quotient, and the correct quotient is ()
①1.08 ②108 ③0.12 ④12
(2) 2 / 3 of number a is equal to 80% of number B, and the ratio of number a to number B is ()
①2/3:80% ②6 :5 ③ 5:6 ④80%:3/2
(3) If the latter term of a: 10 (a ≠ 0) is increased to 20, the former term should be () to keep the ratio unchanged
① Increase 20, increase a, increase 3, increase 2 times, increase 4 times
(4) 4 / 5 kg of rapeseed can extract 1 / 2 kg of oil. How many kg of oil can be extracted per kg of rapeseed? The formula is ()
①4/5÷1/2 ②1/2÷4/5 ③4/5×1/2 ④1/2÷5×4
(5) The volume of water is 1.1 times of the original, and the volume of ice is increased by ()
①10% ②110% ③1/11 ④10/11

1、 (2) 250 square kilometer = (25000) hectare 1 / 6 is (1) hour (10) minutes (3) 1.2 = 72 / (60) = (120)