First, fill in the blanks. (24 o'clock, each grid 1 point)
1. The highest digit of the nine digits is the smallest prime number, the smallest composite number on the ten million digits, the smallest odd number on the thousand digits, and all the digits in other digits are zeros. This number is written as (), rewritten as () in units of "ten thousand", and the mantissa after omitting "one hundred million" is ().
2. Fill in the appropriate units of measurement in brackets.
(1) An egg weighs about (). (2) The capacity of a bottle of mineral water is 550 ().
3,3: 20 = (), 5 kg = () tons.
The decimal unit of 4 is (), and the sum of these units () is the smallest prime number.
5, 1964, 10, 16, China's first atomic bomb test was successful, and there were () days in this year. This year 10 will be the anniversary of ().
6, meteorological bureau in order to show the temperature changes in a day, using () statistical chart is the most appropriate.
7, A and B are natural numbers, and A ÷ B = 5, then the greatest common divisor of A and B is ().
8. Xiaoli deposited a fixed deposit of 65,438+0,000 yuan in the bank on June 28th last year, with the annual interest rate of 65,438+0.98% and the interest tax of 20%. By the end of this year, Xiaoli will receive the principal and after-tax interest of * * yuan.
9. floret height1.6m. In the photo, her height is 5 cm. The scale of this photo is ().
10 Class 6 in a primary school (1) has 49 students in class one day and asks for leave 1 person, and the attendance rate on that day is ().
1 1, 0.803, 0., 0.8, in descending order is ().
/kloc-the number of boys in class 0/2 and class 6 (1) accounts for the whole class, so the number of girls is the number of boys ().
13, cut a cube with a side length of 6 cm into the largest cone, and the volume of the cone is ().
14, 4.6÷ 1 1 is expressed by a cyclic decimal, and the number of138th place after the decimal point of this cyclic decimal is ().
15, if 33, 27, 2 1 are divided by the same number respectively and the remainder is 3, then the divisor is at most ().
16, there is a cuboid, which is just cut into four cubes with the same size. The surface area of each cube is 24 square centimeters. It turns out that the surface area of a cuboid may be () square centimeters or () square centimeters.
Two. Judging whether it is true or not (tick "√" for the right and "╳" for the wrong) (5 points)
1. Look at an angle of 20o with a magnifying glass, and the angle is still 20o. ( )
The area of a square is proportional to the length of its sides. ( )
3. If the number A is equal to the number B, then the number A is less than the number B. ().
When a number is divided by a true fraction, the quotient must be greater than the original number. ( )
5. Any prime number plus 1 becomes an even number. ( )
Three, multiple choice questions (put the serial number of the correct answer in brackets) (5 points)
1, the total amount of work is certain, and the work efficiency and working time ().
A, proportional to B, inversely proportional to C, out of proportion
Please estimate () your closest age.
A, 600 minutes b, 600 weeks c, 600 hours d, 600 months.
3. If A is 25% greater than B, then B is less than A ().
A, 20% B, 25% C, uncertain
There are 2g of salt and 50g of water in the salt water. If you add 2 grams of salt, now salt accounts for () of brine.
A, B, C, D,
5, the side of the cylinder, will not get ().
A, parallelogram b, rectangle c, square d, trapezoid
Fourth, the calculation problem (3 1 minute)
1, write directly. (10)
6-3.75= -= +0.75= 1.5-=
(+)×4= 0. 1×0.99= 7.5÷0.25=
÷6= 1÷-÷ 1= 7×÷7×=
2. Off-model calculation (if it can be calculated simply, write down the main steps) (12 points)
①3.6+9.5-2.8-7.2 ②÷23+×+
③(+)÷- ④ 18÷〔+(-)〕
3. Find the unknown χ(4 points)
①0.36×5-2χ=0.4 ②=
4. In the trapezoid shown below, the shaded area is 24 square decimeters. Find the trapezoidal area (5 points).
Comprehensive application (35 points, 5 points for each question)
1. The following is the plan of the school playground. The ratio is 1: 2000. First, measure the length and width (keep the whole centimeter) on the map and mark it on it. So, what is the actual area of the playground?
2. Binding a book, if each page is 500 words, you can arrange 180 pages. How many pages can you save if you arrange 600 words per page instead? (Use proportional solution)
3. The school carried out water-saving activities, saving 8.4 tons of water in the first four days of the week and 4.9 tons of water every day in the last three days. How many tons of water have been saved every day this week?
The distance between Party A and Party B is 360 kilometers. A truck and a bus leave from Party A and Party B at the same time. As we all know, the speed of bus is 50 kilometers per hour, and the speed of truck is the speed of bus. How many hours after the two cars left?
5. A cylindrical iron drum with an inner diameter of 4 decimeters at the bottom and a height of 5 decimeters.
How much iron does it take to make this iron drum? (Ignored at the interface)
(2) If the iron drum is full of water, how many liters of water are there?
6. To build an expressway, Team A 15 days and Team B 12 days. After four days of joint repair, Team B moved away and the remaining routes continued to be repaired. A * * team repaired for a few days?
7. Xiaoming reads books. On the first day, he finished reading the whole book. The next day, he read six more pages than the first day. At this time, the ratio of pages read to remaining pages is 5: 6. How many pages does Xiaoming have to read before he can finish reading this book?