1. A number, minus 20% of it, plus 5, is still 3 less than the original. So, this number is _ _ _ _ _ _ _ _.

2. The number A is less than the number B 16%, and the number B is 20% larger than the number C. Among the three numbers A, B and C, the smallest number is _ _ _ _ _ _ _ _ _. 3. At 6: 10 on the clock, the obtuse angle formed by the minute hand and the hour hand is _ _ _ _ _ _ _ _ _.

4. A true score, if multiplied by 3, the numerator is smaller than the denominator 16, if divided, the denominator is smaller than the numerator by 2, and this true score is _ _ _ _ _ _ _ _.

5. The weight of 1 1 plum is equal to the weight of two apples and 1 peach, and the weight of two plums and1apple is equal to the weight of1peach, so the weight of a peach is equal to the weight of _ _ _ _ _ _ _ _.

6. The sum of number A and number B is 16, and number A is _ _ _ _ _ _ _.

7. Among the paintings exhibited in the "June 1st" art exhibition, 14 is not in grade 6, 17 is not in grade 5, and 2 1 is exhibited in grade 5 and 6. Therefore, the paintings exhibited in other grades are _ _ _ _ _ _ _.

8.100g 15% saline, put 8g of salt. In order to make the concentration of the solution reach 20%, then, you have to add _ _ _ _ _ _ _ g of water.

9. The two factories A and B produce the same number of products. The quantity of genuine products in Factory A is three times that of defective products in Factory B, and the quantity of genuine products in Factory B is four times that of defective products in Factory A.. Then, the ratio of the number of genuine products produced by factory A and factory B is _ _ _ _ _ _ _.

2. Application questions: (9 points for each question, formula calculation is required, only the number of answers is given, but not given)

1. The quotient of dividing two numbers is 22, the remainder is 8, and the sum of dividend, divisor, quotient and remainder is 866. Q: How much is the dividend?

There were 407 contestants in the Singer's Grand Prix in February and June 1 Day. The number of female singers who did not win the prize accounted for the total number of female singers, 16 male singers did not win the prize, but the number of male singers who won the prize was the same. Q: How many male singers are there?

3.A goes from place A to place B, and B and C go from place B to place A. Three people start at the same time. A first meets B on the way, and then meets C in 15 minutes. A walks 70 meters per minute, B walks 60 meters per minute and C walks 50 meters per minute. Q: What is the distance between A and B?

4. A batch of military support materials can be transported in three days if they are transported by eight big trucks, and 75% of the total materials can be transported in eight days if they are transported by five small trucks. How many days can three big trucks and four small trucks carry?

5. The number of boys in three groups is the same. The number of boys in the first group is equal to the number of girls in the second group, and the number of boys in the third group is the sum of the three groups of boys. What percentage of boys are in the three groups?

6. Both water inlet pipes A and B are opened at the same time, which can fill 40% of the pool in 4 hours, then open pipe A for 5 hours respectively, and then open pipe B respectively.

It took 7.4 hours to fill the pool. Q: If the second pipe is opened separately, how long will it take to fill the pool? 7. Xiaoyu started from home by bike at 8 o'clock. Eight minutes later, his father rode a motorcycle and caught up with Xiao Yu, who was 4 kilometers away from home. At this time, his father rushed home immediately because of something, and then turned around and caught up with Xiao Yu, who was 8 kilometers away from home for the second time. Q: When did his father catch up with Xiao Yu for the second time?

8. The number of people in Workshop A is less than that in Workshop C, and the number of people in Workshop C is 25% more than that in Workshop B, which is less than the sum of the number of people in Workshop A and Workshop B. How many people are there in the three workshops?

9. If a store buys a batch of goods in 480 yuan and sells them all at the price of each piece in 6 yuan, it can make a profit of 25%. In fact, some goods can only be sold at a reduced price per piece in 5 yuan due to quality problems, so the real profit is 20%. How many of these goods are qualified products at 6 yuan price?

10. At 4: 00 a.m., Car A and Car B left relatively at the same time. They were expected to meet at 10 in the morning, but at 6: 30 in the morning, the B car stopped at the midway point C for some reason, and the A car continued to go 350 meters. After meeting at the point C, the B car immediately drove to the point A at the original speed of 60 kilometers per hour. Q: When does the B train arrive at the A location?

Math test questions from grade six to junior high school 1. Multiple choice questions (write the serial number of the correct answer in the brackets behind)

1, if a÷7/8=b×7/8(ab is a natural number), then (). ①a & gt； b②a = b③a & lt； b

2. In natural numbers, any multiple of 5 () ① must be a prime number ② must be a composite number ③ may be a prime number or a composite number]

3. The flour yield of wheat is unchanged, and the weight of wheat is inversely proportional to the weight of grinding () ①, ② is directly proportional to ③ is not directly proportional.

The first term of the ratio is 8. If the first item is increased by 16, the last item should be (), keeping the proportion unchanged. ① Increase 16 ② Multiply 2 ③ Divide by 1/3.

The largest of the three angles of a triangle is 89 degrees, and this triangle is (). ① acute triangle ② right triangle ③ obtuse triangle

6, a cylinder, if its base diameter is expanded by 2 times, the height is unchanged, and the volume is expanded by () times. 1 2 2 4 3 6 2. Fill in the blanks

1, 20.407 million yuan (), rounded to ten thousand, about () ten thousand.

2, 68 months = () year () month 4 liters 20 ml = () cubic decimeter.

3、0.6:( )= 9.6÷( )= 1.2 =( )%

4. When the natural number A is divided by the natural number B, the quotient is 18, and the least common multiple of A and B is ().

5. On the map with the scale of 1: 50000, the distance between two points is 12 cm, and the actual distance between these two points is () km.

6. In a proportion, it is known that two external terms are reciprocal, one of which is the smallest prime number and the other is (). 7. Cylinders and cones have equal bottoms and heights. If their volumes differ by 32 cubic decimeters, then the volume of the cone is () cubic centimeters.

8. 168 continuously subtract 12. Subtract () times and the result is 12.

A piece of steel is 5 meters long. It takes 3/5 hours to saw it to be 50 cm long, and () hours if it is 100 cm long.

10, the length and width of a cuboid wood are 4 decimeters and the height is 8 decimeters. The volume of this wood is (); If this piece of wood is sawed into two cubes, then the sum of the surface areas of the two cubes is ().

1 1, the area of a rectangle is 2 10 cm2, its length and width are two continuous natural numbers, and the circumference of this rectangle is ().

Third, the application problems:

1, only column types are calculated, not calculated. (1) After streamlining, there are 75 staff members in an organ, which is 45 less than the original. By what percentage? (2) The distance between Party A and Party B is 405km. Car A travels from A to B in 4 hours 180 km. At this rate, how many hours will it take for the bus to get to B?

2. The drum of the drum is a cylinder. This drum is 2 meters in diameter and 5 meters in length. Now the roller rolls forward 120 turns. What is the area of the pressed road surface? (π takes 3. 14)

3. A factory produces a batch of cement, which was originally planned to produce 150 tons per day, and the task can be completed on time. Actually, the output was increased by 30 tons per day, and the task was completed in only 25 days. How many days does it take to complete the original planned production task? (Use proportional solution)

4. It takes 5 hours for Party A to cooperate in processing a batch of parts, and 9 hours for Party A to do it alone. It is known that A processes 2 more parts per hour than B. How many parts are there in this batch?

5. The stadium bought 16 basketballs and 12 footballs, and * * * paid 760 yuan. It is known that the unit price ratio of basketball and football is 5: 6. How much does the stadium pay for basketball and football?

6. A shop bought a batch of leather sandals, and the price of each pair was 15% higher than the purchase price. If you sell them all, you can make a profit 120 yuan; If you only sell 80 pairs, you can't go to 64 yuan. What is the purchase price of leather sandals?