Selected examination papers for the midterm of the second volume of mathematics in the fourth grade of primary school

The following is an article selected from the mid-term exam paper of the fourth grade mathematics in primary school for your reference!

I. Oral calculation (10)

8 1÷3= 30× 17= 3900÷30=

89+34+ 1 1= 25×9×8= 47+ 103=

12×700= 150×4= 340-99=

320-98= 6+2+4+8= 98×25=

490÷70= 45× 10 1= 600×2=

36- 18- 12= 0÷72= 0×32=

0+49= 53-0=

Fill in the blanks (each blank 15, 1)

65,438+39,760,000 yuan is written in (), and the mantissa after omitting "ten thousand" is () ten thousand.

259.52 billion yuan is written in (), and the mantissa after omitting "one billion" is about () billion.

3.4800 cm = () decimeter = () meter

4.5080kg = () tons () kg

5.8 kg 60 g = () g

6. () is called addition.

7. Calculate (35+49)÷(63-57), first calculate (), then calculate ().

The basis of 8.73+93+27=73+27+93 is ().

99 □ 7.856 million yuan, with □ () being the closest to 900 million yuan and () being the closest to 65.438+0 billion yuan.

Three. Judgment (mark "√" for the right and "×" for the wrong) (6 points)

1.0 is divided by any number to get 0. ()

2.9 1 is divisible by 7. ()

3.45 1-99=45 1- 100- 1=350.( )

4. The unit of length is greater than the unit of area. ()

The simple operation of finding the sum of several addends is called multiplication. ()

6.296 billion tons ≈ 3 billion tons ()

Four, with a simple method to calculate (12 points)

( 1)36+59+4 1+54

(2)23×7+23×3

(3)78× 102

(4) 1462-369-63 1

V written calculation (12)

( 1)36987+5678

(2)50 162-3685

(3)628×502

(4)7968÷249

Six, from the type calculation (20 points)

( 1)60506- 19460÷35

(2)23072÷4 12×65

(3) 184×38+ 1 16×38- 1 1300

(4)(7969 1-46354)÷629

(5)325÷ 13×(266-250)

Seven, the application problem (25 points)

1.There are 48 students in Class A and Class B, each of whom made 16 paper flowers and sent them to kindergarten. How much did a * * * send?

The distance between a and b is 456 kilometers. How many hours does it take for the train to travel from A to B at an average speed of 76 kilometers per hour?

There are two grain warehouses. If the first warehouse is loaded with 2500 kilograms, the two warehouses have the same amount of food. It is known that the second warehouse has 50200 kilograms of grain. How many catties did the original two grain depots have?

The master produces 64 machine parts per hour, and the apprentice produces 48 parts per hour. How many hours does it take for the apprentice to complete the parts produced by the master in three hours?

5. A rectangular vegetable field is120m long and 60m wide. If one tomato is planted every12m2, how many tomatoes can be planted in this vegetable field? If each tomato charges 3 kilograms, how many kilograms does a tomato charge?

Reference answer

I. Oral calculation (omitted)

fill (up) a vacancy

1.39760000, 3976 2.5950000, 60 3.480, 48 4.5, 80 5.8060 6. Combine two numbers into a number 7 operation. Division 8. The exchange law of addition 9.0, 9.

Three. Judgment: (Mark "√" for the right and "×" for the wrong)

1.× 2.√ 3.× 4.× 5.× 6.√

Fourth, use simple methods to calculate.

1. 190 2.230 3.7956 4.462

V. Written calculation

1.42665 2.46477 3.3 15256 4.32

Six, off-type calculation

1.59950 2.3640 3. 100 4.53 5.400

VII. Application Problems

1. 1536 takes 2.6 hours 3. 102900kg 4.4 hours 5.60000 trees, 180000kg.

Elementary school mathematics volume 8 comprehensive exercises

First, write the number of questions directly.

450+360 720-390 423-299

800× 125 300÷ 15 547+398

16×50 58×5×2 92 1- 123-77

(37+43)÷40 720÷8÷9 24-24÷24+24

Fill in the blanks.

1.4030605000 is pronounced as (), and 6 is in the position of (), indicating ().

2. Write () with 1 0.403 billion yuan, rewrite it as () with "ten thousand" as the unit, and omit the mantissa after1100 million, and its divisor is ().

3. The letter formula indicates that the multiplication distribution law is ().

4. Rewrite 32× 125=4000 into two division formulas.

_________________________

5.3: 20 = () 2060 kg = () tons () kg

6. 1840, 1900, 1954, 1976, 1990, 2000, there are () in normal years.

7.320÷40=8. () can be divisible by ().

8. In division with remainder, dividend-quotient× divisor = ().

9. Given the sum of the minuend, the minuend and the difference is 800, and the minuend is ().

10. The product of the average of two numbers A and B and C is 270. It is known that A is 30, C is 6 and B is ().

Third, judge, mark "√" for the right and "√" for the wrong.

1. 125×8÷ 125×8= 1 ( )

2. The smallest natural number is 0. ()

3.48 can only be divisible by 6. ()

The school playground covers an area of 48,000 square decimeters. ()

Fourth, use a simple method to calculate the following questions.

1.7263+298

2. 1923-456-544

3.265×99+265

4.(250+25)×40

5. 10 1×87

6. 13×49+49×87

7. 125×25×32

8.9999+998+97+6

Verb (abbreviation of verb) finds the unknown X.

1.x+847= 1200

2.x-587=643

3.8640÷x=320

4.x÷20 1= 150

5.x×45=2025

6.(25×8)×x= 1400

Calculate the following questions.

1.75×(47-2 184÷56)

2.(2393-34× 14)÷27

3.(262-26×7)÷40

4.76×(8 12-654)÷38

Seven, column calculation.

1. 125 times 45, divided by the difference between 587 and 562, what is the quotient?

2. 34 times of a number is 538 and less than 3700. Find this number. (The required quantity is indicated by X)

3.47 Subtract the quotient of 2 184 divided by 56 and multiply the difference by 125. What is the product?

Eight, application questions.

1. There are 64 pine trees in the park, less than willow trees 16. The number of poplars is three times that of pine and willow combined. How many poplars are there in the park?

On Children's Day, two groups of students spent 3 hours * * making 240 flowers, the first group made 44 flowers every hour, and the second group had 6 people. How many flowers does everyone make per hour on average?

3. The migrant workers' team will repair the canal, and it is planned to repair 84 meters a day, and it will be completed in 34 days. As a result, 102 meter was built in one day. How many days can it be completed ahead of schedule?

4. A rectangular vegetable field, covering an area of 1 hectare and a length of1.25m.. A wheat field is 250 meters long. These two plots are equal in width. What is the area of the wheat field? How many hectares?

5. A car travels from place A to place B, 90 kilometers in the first two hours and 48 kilometers in the third hour, just arriving at place B. How many kilometers does this car travel per hour on average?

6. Collect a batch of apples in the orchard. Small baskets can hold 25 kilograms per basket, which requires 28 baskets. If it is replaced by 10 big basket, there are still 50 kilograms left. How many kilograms can each big basket hold on average?

Reference answer

Three. 1.× 2.× 3.× 4.×

Four. 1.75 1 2.923 3.26500.00000000005

4. 1 1000 5.8787 6.4900

7. 100000 8. 1 1 100

Verb (abbreviation of verb) 1.353 2. 1230 3.27

4.30150 5.45 6.7

6. 1.600 2.7 1

3.2 4.3 16

Seven. 1.225 2.93 3. 1000

Eight, 1. (64+ 16+64)×3=432 (tree)

2.(240÷3-44)÷6=6 (flowers)