Total score:
Dear students:
Hello! In order to understand the learning situation of one semester and make faster progress in the future, I believe you can answer it easily and seriously.
There is no limit to learning Ren Woxing (20 points).
1. The results of the fifth population census are announced: the total population of China is1295,330,000, the number rewritten as "ten thousand" is (), and the mantissa after omitting "hundred million" is about ().
2. An eight-digit number with the highest digit of 8, 100000 digit of 5, 10000 digit of 6,10000 digit of 2 and all other digits of 0. This number is written as () and read as ().
3. Fill in ">" and "
54070800000 ○ 5470800000 480,000 ○ 4800 1
9000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
4. The line segment has () endpoints, and the ray has () endpoints.
5.3 At exactly one o'clock, the angle between the hour hand and the minute hand is () degrees, and at exactly seven o'clock, the angle between the hour hand and the minute hand is ().
6. Arrange acute angles, right angles, obtuse angles, right angles and rounded corners in the following order.
( )>( )>( )>( )>( )
7, 6930÷2 1, you can think of the divisor as (). Trial quotient is relatively easy, and the quotient is () digits.
8.A ÷ 2 1 = 20 ... (), the maximum number of () can be filled in the brackets, and the maximum dividend is ().
9. How do you estimate the following figures?
(1) A bottle of beverage weighs 485 grams, which is about () grams.
(2) a football field can accommodate 20498 spectators, about ().
10, ∠ 1 = 30, ∠ 2 = () The following figure.
Second, the discerning eye can distinguish between true and false-put "√" in () for the right and "×" for the wrong (5 points).
1, a five-digit number, is about 60,000 after rounding, and the maximum number is 5999. ( )
2. A ray is 5 meters long. ( )
3. The angle has nothing to do with the side length. ( )
4. Units, ten, hundred, thousand and ten thousand are all counting units. ( )
5. The propulsion rate between every two counting units is 10. ( )
Third, choose the right knowledge-choose the serial number of the correct answer and fill in (). (5 points)
1, in the following figures, only one zero is ().
①603080 ②6030800 ③6003800
2. look at a 30 with a magnifying glass with a magnification of 100 times? Angle, the degree of angle is ().
①300? ②30? ③3000?
3. If A×40=360, then A×4= ().
①3600 ②36 ③360
4, when using the calculator operation, if you find that the input data is incorrect, you can use the () key to clear the error.
① ② ③
Xiao Ming makes tea for the guests, taking water 1 minute, boiling water for 6 minutes, washing teacups for 2 minutes, taking tea 1 minute, and making tea 1 minute. Xiao Ming should arrange the above things reasonably, and it will take at least () a few minutes for the guests to have tea as soon as possible.
①7 minutes, ② 8 minutes, ③ 9 minutes.
Four, carefully calculate 100% (30 points)
1, write the result directly. (6 points)
390+ 1 1= 240÷60= 620- 180= 90×70=
120×7= 4500÷ 15= 430+80= 560×0=
125×8= 900÷6= 140×60= 7200÷90=
2. Estimate and write the results. (6 points)
4 16÷70≈ 645÷79≈ 43× 12≈
638÷90≈ 98× 102≈ 507×48≈
3. Write the following questions (18 points)
134× 16 372÷3 1 208×34
625÷25 540× 18 1508÷29
Five, comic world I soar-according to the requirements of the operation (7 points)
(1) Draw a trapezoid in the space below (the size is self-determined) to make the height of the trapezoid. (3 points)
Draw a line segment and divide the trapezoid into triangles and parallelograms. (2 points)
(3) Measure the degree of ∠ 1 and mark it. (2 points)
1
6. Carefully sort out the detailed questions and answers (1 question 2 points, 2 questions 1 point, 1② question 2 points, ③ question 2 points, 8 points * * *).
The number of extracurricular books read by four groups of students in Class Two, Grade Four, bright primary school is as follows:
One, two, three, four.
Read the number 40 60 50 70
1. Please complete the statistical table and make a histogram. (2 points)
70.bit by bit, bit by bit
60
50
40
30
20
10
2. According to the statistical chart:
① The first group read () fewer books than the fourth group;
② The second and third groups read () books;
(3) Four years, two classes, average reading in each group ().
What other questions do you want to ask?
Sixth, walk into life and show your talents. (5 points for each small question, * * * 25 points)
1, a bunch of flowers in 30 yuan, buy 5 for free 1. Aunt Wang buys five bundles at a time. How much cheaper is each bundle?
The speed of the car going up the hill is 36 kilometers per hour. It takes 5 hours to reach the top of the mountain, and only 4 hours to go back the same way when going down the mountain. How many kilometers per hour does the car average when it goes downhill?
3. The experimental primary school should buy a composition guidance book with the price of 12 yuan for each of the third and fourth grade students. It is known that there are 145 students in grade three and 155 students in grade four. How much are the two grades?
4, the school to carry out water conservation activities, the first three months * * * to save 435 tons of water. According to this calculation, how many tons of water can the school save a year?
5. Students should make 120 flowers, each with 5 flowers. Each group 12 people. How many groups of students should do it?
Students, have you finished all the questions? Can we check it again? I believe you will be able to hand in a satisfactory answer sheet!