1? A ten-digit number, the highest digit is 7, millions and hundredths are all 5, and all other digits are 0. This number is written as () and read as (? ), the highest digit of this number is (? ) bit. The mantissa after omitting 100 million is about () million.

The product of 2.400×30 is (? ) Numbers with (? ) 0.

3, 28 times of 65 is (), and 288 is 72 (? ) times.

The hounds can run at the speed of 35 kilometers per hour. )。

5, () × time = distance

6. The new primary school dictionary has 592 pages. It is estimated that there are about 12 such dictionaries. ) page.

7, an angle is 89 degrees, it (? ) Angle, a right angle is equal to (? ) right angle, a fillet is equal to (? ) boxer, a fillet is equal to (? ) right angle.

8、? The quotient of two numbers is 24. If the dividend is constant, the divisor is reduced by 4 times, and the quotient is ().

9. When A ÷ 15 = 14...B, the maximum remainder b is () and the dividend a is (? )。

10, one pot can only fry two fish, and it takes four minutes to fry one fish. (2 minutes on each side), then it takes at least () minutes to fry three fish.

(This question is to examine students' mastery of basic knowledge, mainly including divisor divided by two digits, three digits multiplied by two digits and wide angle of mathematics. ).

Second, discerning right from wrong. (2 points for each question, 10)

1, the size of the angle has nothing to do with the length of both sides, but with the size of both sides. ()

2. In the numerical sequence table, the advancing rate between any two counting units is 10. ()

3、? The number of 660 is 6000600. ? ()

4. If the divisor is enlarged by 7 times, the divisor must be reduced by 7 times to keep the quotient unchanged. ()

5. The obtuse angle must be greater than the right angle, and the angle greater than the right angle must be obtuse. ? ()

This question examines students' mastery of confusing knowledge points and asks them to analyze the problems.

Third, I will choose. (Fill in the serial number of the correct answer in brackets) (2 points for each question, 12 points).

1、.？ Omit 59296500 and the mantissa after "ten thousand" is about (? ? )。

5930？ ? B, 59.29 million? ? ? C, 59.3 million

2. It is estimated that the quotient in the following formula is closest to 9 (? ? )。

a、434÷5 1？ ? b、632÷7 1？ 520÷60

3. Divide the flat angle into two angles, one is obtuse angle and the other is (? )。

A, obtuse angle b, acute angle? C, right angle

4、? Which of the following statements is wrong (). 1. Parallel lines may also intersect.

B, the trapezoid has countless heights. C, two groups of parallelograms are parallel to each other.

5. A () is 20 cm long. ?

Answer? 、? Straight line b? , ray C. line segment

6. Draw a vertical line of a known straight line outside the straight line, and you can draw (? ) article.

One by one. B, two C's, countless.

Multiple choice questions enable students to learn to use knowledge flexibly and enhance their thinking ability.

Fourth, my calculation is the most serious. (? 27 points)?

1、? Write directly (65438+ 0 points for each question, 9 points)

600×80=? 24×300=? 960÷60=

0÷32? =? 540÷6=? 18×50=

695×7 1≈ 6294÷7 1≈ 479÷8 1≈

2. Column vertical calculation. (2 points for each question, 12 points)

140×45=208×35=240×38=

782÷78=7200÷600=? 485÷64=

3. Off-mold calculation. (3 points for each question, 6 points)

224÷56+256203×(86- 16)

(The first question examines students' oral expression ability. The purpose is to examine the accuracy and speed of students' oral calculation. It's relatively easy and has a good effect on stabilizing students' mentality. The second problem is the vertical calculation of columns. Investigate students' ability to calculate the vertical division of three digits by two digits, and the divisor is two digits. The third topic is off-type calculation, which mainly examines the students' operation order and calculation accuracy. )

5. Draw a picture and calculate. (2 points for each question, ***8 points)?

1、? Draw a parallel line of light AB through point o.2. ? Draw an angle of 105 with a protractor.

Draw a vertical line of ray AC at point O. ?

4.？ Draw the height on the base of the parallelogram.

3, known ∠ 1 = 43? ∠2=() ∠3=( )。

(By drawing the heights of vertical lines, parallel lines and parallelograms, the methods of drawing vertical lines and parallel lines by students and the degree of finding angles are investigated, and the application of right angles and parallel angles by students is mainly investigated. The students' hands-on operation ability, spatial imagination and calculation ability were tested. )

6. I am good at solving problems. (4 points for each question, ***24 points)

(This topic mainly examines students' ability to solve mathematical problems encountered in life, so that students can develop the habit of careful examination and careful calculation. Cultivate students' hands-on operation ability and the ability to solve problems in combination with reality. And examined the students' computing ability and serious learning attitude. )

1, the fruit shop Li took 2,000 yuan to buy apples in the wholesale market, bought 25 boxes, and left 150 yuan. What is the wholesale price of apples per box?

The number of boys and girls in the fourth grade of the school is the same, and they have to participate in the performance of the sports meeting. 30 boys in each row, row 14. There are 35 girls in each row. How many rows can there be?

3. Teacher Chen went to the sporting goods store and bought 12 basketball. The price of each basketball is 63 yuan, and she also spent 240 yuan to buy eight volleyballs. How much did Mr. Chen spend?

The driver, Uncle Wang, started from Jinan and delivered goods in Xuzhou. The speed was 60 km/h in the first three hours and 55 km/h in the last two hours. How many kilometers did Uncle Wang travel from Jinan to Xuzhou?

5. The school carried out water-saving activities, saving 435 tons of water in the first three months. According to this calculation, how many tons of water can the school save a year?

6. Mom comes home from work to cook, 3 minutes to wash rice, 30 minutes to cook, 8 minutes to wash vegetables, 5 minutes to cut vegetables, 10 minutes to cook. If different pots and stoves are used to cook and cook, how long does it take mom to cook all the meals?