Let's talk about the main points of math review in the second volume of the fifth grade! ! !

1. Cube is also called (), which is a cuboid of ().

The greatest common factor of 2.4 and 28 is (), and the smallest common multiple is ().

3. The least common multiple of three prime numbers is 165, and these three numbers are ().

4. A number has only () two divisors, and this number is called a prime number.

5. Divide () into several parts on average, and the number representing such a part or parts is called a score.

6.= = ; = 5

7. Fill in the appropriate score in () below.

25cm = () m 15000m2 = () ha。

1 ton 600kg = () ton 1 10 second = () minutes.

1400 ml = () 8 months = () years.

125 cubic centimeter = () liter = () cubic decimeter.

8. put ">"

○ ○ ○

9. True score () False score.

10. A cube with a side length of 4cm has a surface area of () cm2 and a volume of () cm3.

1 1. If a number is divisible by 2, 3 and 5 at the same time, then the number in its company must be ().

12. Divide 4 into 9 parts on average, and each part is ().

Second, judge.

1. False scores are all greater than 1. ( )

2. The least common multiple of two numbers must be divisible by these two numbers. ( )

3. The product of prime number and prime number is still prime number. ( )

4. All even numbers are composite numbers. ( )

5. The commutative law and associative law of integer addition are also applicable to fractional addition. ( )

6.4.98- 1+ 1 The calculation is simple. ( )

Third, choose.

1. 1-20 has () which is both complex and odd.

A. 1

2. Put 5g of sugar into100g of water, and sugar accounts for () of sugar water.

A. BC

3. There are () fractions in,,,,, and that can be converted into finite decimals.

A.5 B.6 C.7

4.2m () 1m。

A. greater than B. less than C. equal to

Fourth, calculation.

4.76 + 5+ 5.24 3-(0. 16 + 1)- 1.84 2.8-(0.43 + + 1)

9.56-3-2 3+ (2.2 + 4)-(2- 1)

5. Solve the following equation.

2X + 4= 4.875 2X + 5= 10-3

0.4×6+3x = 4.8 9x -2.7÷0.03 = 0

Formula calculation of intransitive verbs.

What is the sum of 1.5 and 1 less than 8?

Add a number to the product of 2.3.5 and 0.8, and the sum is 7. Find this number. (Equation solving)

Seven, other issues.

1. Find the greatest common factor and the least common multiple of 60 and 75.

2. Find the greatest common factor and the least common multiple of 10.34 and 68.

Eight, application questions.

1. There are 49 students in one class, including 24 boys. What percentage of boys are in this class? What percentage of girls are in the class?

Saw a 30-meter-long steel pipe into three sections. The first section is 7 meters long and 2.5 meters shorter than the second section. How many meters is the third section?

3. There is a swimming pool with a length of 25m, a width of 12m and a depth of1.4m. How many square white tiles do you need?

4. An engineering team built a highway with a length of 15.8km, which was 5km in the first week and 0.7km more in the second week than in the first week. How many kilometers will it take to complete?

This cuboid reservoir has 2 100 cubic meters of water. This reservoir is 50 meters long and 20 meters wide. How deep is it?

6. The school sent 7.6 cubic meters of sand and spread it in a bunker 5 meters long and 3.8 meters wide. How thick can it be laid?

7. A water conservancy engineering team repairs ditches 125m every day for the first four days and 134m every day for the last three days. How many meters of canals does this engineering team build on average every day?

Interviewee: Cola Heart-Level 1 20 10-2-2 2 1:00.

The landlord is absolutely right.

Interviewee: Xiaomaohai 44- Level 2 20 10-2-2 2 1:04

Fill in the blanks. (15 points, each with one point empty)

(1) 4,536,000 is written as (), and the number rewritten as ten thousand is ().

(2) 3.04 square meters = () square meters () square decimeter.

(3) 0.6 ton = () kg.

The decimal unit of (4) is (), which consists of () such decimal units.

(5) =( ): 15= =( )%

(6) The ratio of A to B is 2: 3, B is C, and the ratio of C to A is ()

(7) The least common multiple of 24 and 18 is ()

(8) In descending order, 1.667, 167, 167%.

( )

(9) The volume of a cylinder is 48 cubic decimeters, and the volume of a cone with equal bottom and equal height is () cubic meters.

(10) A fraction, and the sum of numerator and denominator is 47. If the denominator is added with 13, the score is, and the original score is ().

Second, judge. (10, one point for each question)

1, the perimeters of two circles are equal, so their areas are equal. ( )

2. In proportion, two internal terms are reciprocal, and two external terms are reciprocal. ( )

3.A number is more than B number 10%, and B number is less than A number 10%. ( )

4. There are 98 students in grade five, all of whom are in school, and the attendance rate is 100%. ( )

5. The denominator is certain, and the numerator is inversely proportional to the fractional value. ( )

6. There are 6 kilograms of melon seeds. I ate 1 kg, and there are 5 kg left. ( )

7. Four times six of x is written as 4X+6. ()

8. Because 25% = 0.75, decimals and percentages have the same meaning. ( )

9. If A is 80% of B, then B is 25% more than A ... ()

10, and the annular area is larger than the sector area. ( )

Third, choose. (5 points, one point for each small question)

1. Divide the 5m-long rope into 7 segments on average, each segment accounting for () of the total length.

○ 1 m ○2 ○3 ○4 m

2. The number A is 60, which is 10% more than the number B. The formula of the number B is ().

○ 160×( 1+ 10%) ○2 60×( 1- 10%)

○360÷( 1- 10%) ○4 60÷( 1+ 10%)

3. On Arbor Day, middle school students planted trees, 100 trees survived, but two trees died, and the survival rate was ().

○ 1 100% ○2 98% ○3 102%

4, this year's output is 20% higher than last year, this year is last year's ().

○ 1 20% ○2 80% ○3 120%

5. When the unit price is fixed, the quantity and total price are divided into ()

1 is proportional; 02 is inversely proportional; 03 is out of proportion.

Fourth, calculation. (8+6+6+ 12=32 points)

1, a number written directly. (8 points)

304+ 198= 3- = 10 ×2= 1-4÷7=

7.5× = 5.2×6= 3.85×0+2.4= 2 1 ÷7=

2. Use a simple method to calculate. (6 points)

○ 19.98×78+22×9.98 ○24.9+ 5.56 + 4.34+ 5

3. Off-mold calculation. (6 points)

8.6+2.6×3.5÷ 1.3 8- 9.4- × ÷0.75

4. Solution ratio (12 points)

○ 1 =5: 14

75 : =2.5: 12

5. Column calculation. (8 points)

1200 divided by 20, what is the quotient?

○2 minus 1.8 divided by quotient, what's the difference?

Fifth, the application problem. (6 points ×5=30 points)

1. The distance between Party A and Party B is 640 kilometers. Buses and trucks run from Party A to Party B at the same time. It is known that the speed of trucks is 40 kilometers per hour, and the ratio of bus speed to truck speed is 3: 2. A few hours later, the distance between the two cars was 60 kilometers.

2. A road construction team paved a section of railway. It was originally planned to pave 3.2 kilometers a day, but it was actually paved 25% more than originally planned. The laying of this railway actually took 12 days. It was originally planned to finish paving in a few days. (Use proportional solution)

3. The pesticide liquid and water are prepared according to the ratio of 1: 1500. How many kilograms of liquid medicine and water does it take to prepare 750.5 kilograms of this pesticide?

4. Xiao Na read a book. On the first day, he read the total pages. The next day, he read 25% of the total pages. On the third day, he read 42 pages and just finished reading them. How many pages are there in this book?

5. Party A and Party B build a section of highway together. The working efficiency of team A is that of team B, and the two teams cooperate for 6 days. Just finished repairing this section of the road. The rest was repaired by team B alone. How many days will it take to complete?

I. Fill in the blanks: 20%

1.2.5 hours = () hours () minutes 5060 square decimeters = () square meters.

Divider of 2. 24 is (), and the prime factor of decomposition 24 is ().

3. The unit of score is 1/8. The maximum true score is (), and the minimum false score is ().

4. The numerator of the simplest fraction is the smallest prime number, the denominator is the composite number, and the maximum fraction is (). If you add decimal units like (), you will get 1.

5. Cut a cuboid whose length, width and height are 5 decimeters, 3 decimeters and 2 decimeters respectively into two small cuboids, and the maximum sum of the surface areas of these two small cuboids is () square decimeters.

6. With a 52 cm long wire, you can weld it into a rectangular frame. The frame is 6 cm long, 4 cm wide and () cm high.

7.A=2×3×5, B=3×5×5, the greatest common divisor of A and B is (), and the least common multiple is ().

8. When the side length of a cube is enlarged by 3 times, its surface area is enlarged by () times and its volume is enlarged by () times.

9. Compared with 5/ 1 1, () has a larger decimal unit and a larger fractional value.

10. The greatest common divisor of two numbers is 8 and the least common multiple is 48, where one number is 16 and the other number is ().

Second, multiple-choice questions (the serial number of the correct answer in brackets): 20%

1. In the following formula, the divisible formula is ()

① 4÷8=0.5 ② 39÷3= 13 ③ 5.2÷2.6=2

2. In 2/3, 3/20 and 7/28, the fraction that can be converted into a finite fraction is ().

① 3, ② 2, ③ 1

3. The product of the multiplication of two prime numbers must be ()

① Odd number ② Even number ③ Composite number

4.A=5B(A and B are both non-zero natural numbers) The following statement is incorrect ()

① The greatest common divisor of A and B is a2a, and the least common multiple of B is A..

③ A is divisible by B, and A contains a divisor of 5.

5. Add100g salt to100g water, and the salt accounts for () of the brine.

① 1/9 ② 1/ 10 ③ 1/ 1 1

6. given a > b, compare 2/a and 2/b ()

① 2/a > 2/b22/a < 2/b3 cannot compare dimensions.

7. The greatest common divisor of two numbers is 12, and the common divisor of these two numbers is ().

① 2 ② 4 ③ 6

8. A cuboid is cut into a small piece (as shown). The following statement is completely correct ()

① With the decrease of volume, the surface area also decreases.

② The volume decreases and the surface area increases.

(3) The volume decreases and the surface area remains unchanged.

9. Use rectangular paper of equal size, each with a length of 12 cm and a width of 8 cm. To spell a square, you need at least this rectangular piece of paper ().

① 4, ② 6, ③ 8.

10, a 6-meter-long rope, first cut off 1/2, and then cut off 1/2 meters, leaving ().

① 5m ② 5/2m ③ 0m

Third, the calculation question: 28%

1. Find the surface area and volume of a cuboid (unit: decimeter) 4%.

a=8 b=5 c=4

2. Off-model calculation (simplified to simplified) 12%

6/7+2/ 15+ 1/7+ 13/ 15 19/2 1+5/7-3/ 14

2/3+5/9-2/3+5/9

8/9-( 1/4- 1/9)- 3/4

3. Use 4% to find the greatest common divisor and the least common multiple of the following groups.

Articles 24 and 36

18, 24 and 40 (only the least common multiple)

4. Text problem 6%

What is the sum of 5/9 and 7/ 18 minus 1/2?

Subtract the difference between 7/ 15 and 7/30 from a number and the result is 2/3. What's this number? (Equation solving)

Four, painting questions 4%

Please use shading to represent 1/2 (at least 5 kinds).

Verb (abbreviation of verb) application problem: 30%

1. A piece of land, in which 1/5 kinds of corn, 1/6 kinds of vegetables and the rest kinds of watermelons. What is the proportion of watermelons planted in this land?

There are 24 boys and 20 girls in one class. How many times more boys than girls? What is the percentage of boys to girls?

Students take part in environmental protection action. The fifth grade cleared 3/5 tons of garbage, less than the sixth grade 1/8 tons. How many tons of garbage were removed in the fifth and sixth grades?

4. A rectangular iron plate with a length of 40 cm and a width of 30 cm, the four corners are cut off and the sides are 4 cm long, and then welded into a box without a cover. How many liters is its volume?

5. A car traveled192km in the first 3 hours and 58km/h in the last 2 hours. What is the average speed of this car?

Is it okay?

Pick me?