First, back to the referee. 5 points

1, the numerator and denominator of the fraction are multiplied or divided by a number (except 0) at the same time, and the size of the fraction remains unchanged. ()

2. Two triangles with equal areas have equal bases and heights. ()

3. If it is a false score, then A must be greater than B. ()

4. The numerator and denominator of a fraction are prime numbers, which must be the simplest fraction. ()

5. If A is odd, the result of 1093+89+A+25 is still odd. ()

Second, I will choose. 5 points

1. To calculate the trapezoidal area with acm at the upper bottom and bcm at the lower bottom and 3cm in height, the formula () should be used.

a、S=abB、S=3a÷2C、S=3(a+b)÷2D、S=ab÷2

2. In 60 = 12× 5, 12 and 5 are 60 ().

A, multiple b, even c, prime d, factor

3, numerator plus 12, the size of the fraction remains the same, the denominator should be added ().

A, 12B, 36C, 27D, can't do it.

4, 3, as shown in the figure, A gets 1 point for touching the white ball and B gets 1 point for touching the black ball, which is the fairest in the box ().

Xiaojun started from home and went to the bookstore to buy books. When he was halfway through. Remember not to forget to bring money. So he went home to get the money, then went to the bookstore, bought some books and went home. The following figure () accurately reflects Xiaojun's behavior.

American Broadcasting Company Inc (ABC)

Third, the mathematical maze. 26 points

1, the smallest natural number is (), the smallest odd number is (), the smallest prime number is (), and the smallest composite number is ().

2. The area of triangle is 24cm, and the area of parallelogram with equal base and equal height is () cm.

3. The decimal unit is (), and there are () such units. If you remove () decimal units, it is 3.

4. Divide the 5m-long rope into 8 segments, each segment is (), each segment accounts for () of the whole length, and each segment is 5m ().

5、()÷8==0.375=9÷()=

6. Prime number: 21= ()+(); ? ()=()×()。

7, put 36 balls in a box, each box contains the same amount, there are () kinds of loading methods.

8. At this year's Asian Games in Doha, the China delegation won 3 16 medals, including gold 165, silver 88 and the rest bronze. Gold, silver and bronze medals each accounted for the total number of medals.

9. The area of right-angled parallelogram is 40 square centimeters.

The area of this colorful triangle is () square centimeters.

10. The shadow changes of the following set of graphs are regular. Please draw the shaded part of the fourth picture according to this rule.

Fourth, ingenuity. 28 o'clock (6+5+6+6+5)

1, find the common factor and the least common multiple of the following groups.

28 and 75 and 88 and 9

2. Turn a fake score into a belt score or turn a belt score into a fake score.

=

3. Calculate the following questions and how to calculate them simply.

2-(+)++-+

4. Solve the following equations.

5Y-2Y= 18+X=X-=

5. Find the shadow area. (Unit: cm)

Verb (abbreviation of verb) problem solving: 36 points (4+4+4+5+5+5+5+5+5+5).

1. A parallelogram billboard with a bottom length of 14cm and a height of 3.2cm If 0.7kg of paint is used per square meter, how many kilograms of paint should this billboard use at least?

2. A school planted 65,438+000 trees in spring, and 93 trees survived. What is the percentage of living and dead trees in the total number of trees?

3.36 red balls and 24 yellow balls are the same size and packed in the same box. Every ball has just been played. How many can each box hold at most? How many boxes does * * * need at this time?

4. The cross section of a dam is trapezoidal, with a width of 4cm on the top, 7cm on the bottom and a height of 1.8cm. Find the cross section area of this barrage.

5. Two engineering teams, Party A and Party B, built a highway with a length of 1 0,400 meters. They started construction from both ends at the same time. Team A builds 80 meters a day, while Team B builds 60 meters a day. How many days will it take to complete this highway? (Equation solving)

6. A square red paper with a side length of 66 cm can be made into a triangular red flag with a bottom length of 33 cm and a height of 22 cm. How many noodles can you cook at most?

7. There are 20 5 yuan and RMB 10. 1 * * RMB 175. How many RMB are there in 5 yuan and RMB 10?

8. Xiaoming's living room is 6 meters long and 4 meters wide, and now it needs to be replaced with floor tiles. There are two kinds of floor tiles, which is the most economical?

Type A brick: side length 30cm, unit price 27 yuan/block.

Type B brick: the side length is 50cm, and the unit price is 60 yuan/block.

The fifth grade mathematics examination paper volume one answers the second part.

Class name score

I'll do it.

1, see who calculates correctly and quickly. (6 points)

12+ 12= 12+ 13=79— 19=56—23=

1—5 1 1=34+34=27—27= 1—6 13=

7 12+ 16=45— 15= 14+34= 13+38=

2, careful calculation (6 points)

79—23+29 12+ 13+ 14 15+38+45

47+29—47 1— 16—56 15+38+45

3. Circle the simplest score and divide the rest into the simplest scores. (6 points)

16 186390 12 167 185 13630

3, solve the equation (18 points)

x—56 = 19 12+x = 56 12x—9x = 8.7

2x+ 1 = 53x—x = 0.9x—34 = 1 12

Second, I can fill it out. (14)

The factors of 1 and 16 are (), 24 is () and 38 is (). The common factor of 16 and 24 is (), 24 and 38 are (), and 16 and 38 are ().

2.45, 9 and 5, () is a factor of (), and () is a multiple of ().

The common factor of 3, 15 and 9 is (), and the least common multiple is ().

There is a two-digit number 5□. If it is a multiple of 5, □ can be filled with (). If it is a multiple of 3, □ can be filled with (); If it is a multiple of 2 and 5 at the same time, □ can be filled with ().

5. In the natural number 1~ 10, the prime number has () and the composite number has ().

6. The simplest true fraction with denominator of 8 is (), and their sum is ().

7. 158 contains () 18. If () 18 is subtracted, its value is 12.

8. Divide the 3-meter-long rope into 5 parts on average, each part accounts for () of the total length, and each part is () meters long.

9. The parallelogram has a base of 5cm, a height of 4cm, an area of (), and an area of a triangle with equal base and equal height of ().

10. There are 8 red balls and 4 yellow balls of the same size in the pocket. You can randomly draw 1 ball. The possibility of drawing the red ball is (), the possibility of drawing the yellow ball is (), and the possibility of drawing the ball is ().

Third, judge right or wrong. (10)

1, a three-digit number consisting of 2, 3 and 4, can be divisible by 3. ()

2. All false scores are greater than 1. ()

The factor of a number is itself. ()

The multiple of a number is limited, but its factor is infinite. ()

5. Prime numbers cannot be multiples of 2, 3 or 5. ()

6. The perimeters and areas of the two trapezoids are equal. ()

7. Draw a rectangle into a parallelogram with equal area. ()

1 kg of 8 and 35 is as heavy as 3 kg of 15. ()

9. The numerator and denominator of the simplest fraction have no common factor. ()

10, because 4×5=20, 4 and 5 are all factors, and 20 is a multiple. ()

Fourth, make a choice. (10)

1. If 4□6 is a multiple of 3, you can put () in □.

a、 1、2、3B、2、4、6C、2、5、8

2. The bottom of the triangle remains unchanged. If the height is expanded by 4 times, then its area ().

A, expand by 4 times B, expand by 2 times C, which is uncertain.

3. Cut a parallelogram along the height, and you may get ().

A, triangle and trapezoid b, parallelogram and trapezoid

C, two triangles D, two trapeziums

4. Divide the 2m-long rope into 5 sections, each section is ().

a，25m b，25C， 15m

The least common multiple of 5, 8 and 9 is ().

a、8B、9C、72

6. Among the following scores, the score closest to 1 is ().

a、 17B、89C、 13 12

7. Naughty and Xiaoxiao donated their 15 books to the Hope Stack respectively.

A, Shao Xiao donated many books; B, naughty donated many books.

C. Laughing and naughty donated as many books as D. It is impossible to determine who donated more books.

8. Among the following scores, the one that is not the simplest score is ().

a、25B、2436C、97D、 12 19

9. 13 of a line segment is 2cm, and the length of this line segment is ().

4 cm, 2 cm, 6 cm

There are () factors of 10 and 30.

a，4 B，8 C，2

Fifth, solve the problem. (30 points)

1. There is a path with a length of 8m and a width of 1 m on the grass of the parallelogram. Find out the area of the grass.

2. Divide 20 chocolates among 3 people equally. How much will everyone get? What about eight people on average?

3. Two engineering teams, Team A and Team B, built a road with a length of 1 1,400 meters. They started construction at both ends at the same time. Team A builds 80 meters every day, while Team B builds 60 meters every day. How many days will it take to complete this road?

The distance from Huainan to Wuhu is 240 kilometers. At 6: 30 every morning, the bus from Huainan leaves for Wuhu at a speed of 58 kilometers per hour, and the bus from Wuhu leaves for Huainan at a speed of 62 kilometers per hour. When did the two cars meet on the road?

At the forest sports meeting, the deer and the lamb ran the same distance, with 56 points for the deer and 67 points for the lamb. Who runs faster?

6. A story book. Xiaohong read 2 15 on the first day, 14 on the second day, and the third day was less than the sum of the previous two days 15. How many books did she read on the third day?

The fifth grade, the first volume, mathematics paper, answer three

First, do you remember? Fill it out. (20 points)

The natural numbers of 1. 1 ~ 20 include () odd numbers, () even numbers and () prime numbers.

There are () in total.

2.327 If you add at least (), it is a multiple of 2, and if you subtract at least (), it is a multiple of 5.

3. Of the five numbers15, 18, 20, 30 and 45, the multiple of 3 is (). factor

The number of 5 is (), which is both a multiple of 3 and a multiple of 5.

4. Fill in (), (), () and () respectively in the three-digit 42 "".

The numbers after composition are all multiples of 3.

5. Two identical triangles form a parallelogram with an area of 8.2 square centimeters, and one of them

The area of a triangle is () square centimeters.

6. The area of the trapezoid is indicated by the letter ().

7. The parallelogram has an area of 38 square centimeters, a base of 9.5 centimeters and a height of ().

8. Divide 3 tons of coal into 3 piles on average, each pile weighs () tons, and each pile contains 3 tons of coal ().

9. The decimal unit of (), plus the unit of (), is the smallest prime number.

2. Is the following statement correct? Please be a little judge. (10) (Mark "√" for the right and "×" for the wrong)

1. The area of triangle is smaller than that of parallelogram. ()

2. The product of two consecutive odd numbers must be a composite number. ()

The multiple of a number is always greater than the factor of this number. ()

4.5 is a factor and 15 is a multiple. ()

In the activity of giving love, the naughty boy who donated pocket money with Shao Xiao donated much more than the naughty boy who donated pocket money with Shao Xiao. ()

Three, Huoyan Jinjing (fill in the serial number in brackets) (20 points)

1. Prime number ()

A, there is no factor B, only one factor C, only two factors D and three factors.

2. In the following groups, it is () that all three continuous natural numbers are composite numbers.

a、 13、 14、 15B、7、8、9C、 14、 15、 16

3. Denominator and divisor of the fraction in the division formula ()

A can be any number b, not 0.

4. A three-digit number that is both a multiple of 2 and a multiple of 5 is ().

999B、995C、990D、950

5. The simplest true fraction with denominator of 6 is (). ()

a，2 B，3 C，4 D，5。

6.5 There are 20 ()

A, B, C, D,

7. The areas of the two triangles of () must be equal. ()

A, bottom equals b, higher than c, and bottom equals high.

8. The upper and lower bottoms of the trapezoid remain unchanged, and the height is doubled. Its area is ()

A, unchanged b, expanded to 2 times c, reduced to 4 times C.

9. The two even numbers adjacent to 36 are ()

A, 35 and 37B, 34 and 38C, 36 and 38D, 34 and 36.

10. Odd if (), the result is even. ()

A, add an even number b, multiply by 1C, add an odd number d, and divide by 1.

Fourth, the figure you are most familiar with, ask for the area! (10, (1)(2) 3, (3)4, in centimeters)

5. Achievement is our good friend. Can you do as required? (9 points)

1. Convert the following scores into the simplest ones. (3)

along with

2. Turn false scores into fractions or integers. (3 points)

3. Divide the following scores into scores with the same number but the same size. (3 points)

Hmm, how interesting

6. Can you solve common problems in life? Give it a try. (3 1, 1-5, 5, 6)

1. There is a vegetable field, which is trapezoidal, with the upper bottom 13m, 8m shorter than the lower bottom and 50m higher. Last year, there was a bumper harvest of cabbage.

1 1900 kg, how many kg of cabbage per square meter on average?

2. The shape of the orchard is a parallelogram with a base length of 1 15m and a height of 80m. If each fruit tree covers an area of 10,

Mi 2, how many trees can be planted in this orchard?

Xiaoming's family has three kinds of plastic buckets, which are 5 kg, 10 kg and 2 kg respectively. Xiao Ming's mother bought it back.

75 kilograms of soybean oil, which plastic bucket can you choose to just hold soybean oil? How many barrels do you need?

There is no surplus in the fifth grade, whether it is a group of seven or eight people.

How many people are there at least in the summer camp?

5. A rectangle with a length of 24cm and a width of 18cm. If this rectangle is cut into the same square, what is the maximum length of this square? How many squares can you cut?

6. Changchun Travel Agency has launched two preferential schemes, A and B, for one-day tour in Qian Shan, Liaoning. Scheme a: adult 120 yuan, child 80 yuan. Scheme b, more than 5 people (including 5 people), each person 100 yuan.

(1) Which scheme is suitable for 8 adults and 2 children?

(2) Which scheme is suitable for five adults and five children?

(3) Which scheme is suitable for two adults and nine children?