1 . 8 . 05 dm3 =()L()ml 695000 px3 =()dm3 =()m3

In 2. 1~20, there are () odd numbers, () even numbers, () prime numbers and () composite numbers, which are both odd numbers (), composite numbers and even numbers (), neither prime numbers nor composite numbers ().

The volume of a bottle of green tea is about 500 ()

4.493 At least increase () is a multiple of 3, and at least decrease () is a multiple of 5.

5.2A2 This three-digit number is a multiple of 3, and A may be (), (), ().

6. Make a cube shelf with 24dm iron wire, and its surface area is () dm2. The volume is () dm3.

7. Write two prime numbers, both of which are prime numbers (), both of which are composite numbers (), and one prime number is composite number. ( )

8. The sum of two consecutive even numbers is 162, and these two numbers are () and () respectively. Their greatest common divisor is () and their least common multiple is ().

9. Write a maximum three-digit number (), about 2, which is a multiple of 3 and can be divisible by 5.

10. Arrange a three-digit number with 4, 5 and 9 to make it a multiple of 2, and then arrange a three-digit number with () arrangement method to make it a multiple of 5.

1 1. Cut a cube with a side length of 1 decimeter into small cubes with a side length of 1 cm. A * * * can be cut into () pieces. If these cubes are arranged in a row, they are () meters long.

Second, the choice (12 points)

1. If a is a prime number, then the following statement is correct ().

There is only one factor in a.a. A cannot be a multiple of 2.

There are only two factors in C.A. D.a must be an odd number

2. A composite number has at least () factors.

A. 1 D. 2

3. The following () is a multiple of 2, 5 and 3.

A.70 B. 18 C. 30 D. 50

4. When the side length of a cube doubles, its volume increases ().

A.2 times B. 4 times C. 8 times

5. In the picture below, which one is the expanded diagram of the cube, and its number is ().

6. A class in Grade Five lines up to do exercises, and each team has exactly 13 people. There may be () people in this class.

A.48 B.64 C.65 D.56

Three. Judgment: Draw "√" in () for the right and "×" for the wrong (6 points).

1. If the volumes of two cuboids are equal, their surface areas are also equal ().

The factor of a number is always less than its multiple. ( )

3. Cubes with a side length of 6 cm have the same volume and surface area. ( )

In natural numbers, it is either odd or even. ( )

Numbers 3, 6 and 9 are all multiples of 3. ( )

6. Because 12÷3=4, 12 is a multiple and 3 is a factor. ( )

Fourth, give it a try (10)

2. Do the math. The picture on the right shows two sides of an open cuboid iron box. Please calculate according to relevant data.

Fifth, solve the problem. (44 points)

1. The volume of a liquid medicine tank is 14L. If 700ml of medicine is sprayed every minute, how many minutes does it take to finish spraying a box of medicine?

2. The school sent 7.6 cubic meters of sand and spread the sand in a bunker with a length of 5 meters and a width of 3.8 meters. How thick can it be laid?

3. Draw a cuboid classroom 8 meters long, 6 meters wide and 3.5 meters high, excluding the area of doors and windows of 27 square meters. It is known that 0.3 kg of paint is used per square meter. How many kilograms of paint does this classroom need?

4. A cuboid container, from the inside, the length and width are 2dm. After pouring 5.9L water into the container, put the red pestle into the water. At this time, the water depth in the container is 400px. What is the volume of this red pestle?

5. Cut the rectangular wooden stick with a length of 1m into three sections, and increase the surface area by 500px2. What is the original volume of this stick?

6. A gym plans to build a new swimming pool. The swimming pool is 25m long,12m wide and1.4m deep. Please complete the following questions.

(1) How many square meters does the swimming pool cover?

(2) Now, square white tiles with a length of 2m should be pasted around and at the bottom of the pool. A * * *, how much does it cost?

(3) If the swimming pool is full of water, how many liters of water can it hold?

7. Rectangular iron sheet with a length of 750px and a width of 625px. How to cut a square with a side length of 125px from four corners and make a box?

(1) Please draw a sketch.

(2) How many square centimeters of iron does this box use?

(3) What is its volume?

The fifth grade people's education edition mathematics exercise 23 answers 1, with 19/30, 28/98, 5/36, 29/39.

People's Education Press, the fifth grade mathematics volume, exercise 22, which question to answer, type it out.

The average number of answers to 242 questions in the fifth volume of mathematics in People's Education Press is (9.5+10+9.3+9.5+9.6+9.5+9.4+9.5+9.2+9.5)/10 = 9.5.

Majority: 9.5

Average value of b: (10+9+10+8.3+9.8+9.5+10+9.8+8.7+9.9)/10 = 9.5.

Most: 10

I think it is more appropriate for A to participate in the competition, because A's preliminary results are relatively stable.

People's Education Press, the first volume of the sixth grade math exercise 23, the answer 1, (1) 1.5*50%=0.75 yuan.

2.4*50%= 1.2 yuan

1*50%=0.5 yuan.

3*50%= 1.5 yuan

(2) The answer to this question is not unique.

You can buy one kind of bread or two or more kinds together.

Buy all kinds of discounted bread separately:

1 3 ÷ 0.75 = 4 2 3 ÷1.2 = 2 ... 0.6 yuan buys another loaf of bread from the discounted 0.5 yuan.

33 ÷ 0.5 = 643 ÷1.5 = 2⑤ You can buy three loaves of 0.5 yuan and two loaves of 0.75 yuan.

6. You can buy 1 piece1.bread from 5 yuan and two loaves of 0.75 yuan. ...

2. Analysis: 20% off the original price, 20% off the preferential price and 20% off the original price in 9.6 yuan. Find out the original price and divide it.

9.6/20% = 48 yuan

3. 120×80%=96 yuan.

400×80%=320 yuan

180×80%= 144 yuan

80×80%=64 yuan

4.200×3%=6 yuan

5. Tip: This question is intended to cultivate students' awareness of paying taxes according to law.

6. (1) 2× 5.40 %× 3+2 = 23.24 million yuan.

(2) 20,000 yuan = 20,000 yuan

2×5.40%×3×5%= 162 yuan.

7. There are many ways to deposit: you can survive, but the interest rate is low; You can save it for one year or two or three years, but you can't get interest once a year like a one-year period; You can also buy government bonds without paying interest income tax.

8. (1) 8× 96% = 76,800 yuan.

(2) 76,800 yuan = 76,800 yuan

76800×1.5% =1152 yuan.

9. (1) 300× 5.40 %× 3× 5% = 2.43 yuan.

(2) 300× 5.40 %× 3× 5%-2.43+300 = 346.17 yuan.

These are standard answers.

Grade 5, Volume 2, People's Education Edition, Math Exercise 27 13, Answer 1. The median of the average mode.

1 class 8.458333...8.5 8.4

Category 2 8.4 8.4 8.4

2. Class Two

People's Education Press Mathematics Grade Five Volume II 1 Exercise 22 14 Page 5.6 Answer 5. ( 1)

Solution: x=4/3 (three quarters) -7/3.

x=28/9

(2)

Solution: x=8/3+ 12/5.

x=24/ 19

(3)

Solution: x= 1+6/ 1.

x=6/7

6. (Side view)

( 1) 12/ 1

(2) 10/7

(3)42/ 1

(4)30/ 1 1

(5)56/ 1

(6)72/ 17

(7)6/ 1

(8)90/ 19

How painful! Give some points!

And I'm in the sixth grade! And turn over the books!

20 12 People's Education Edition, exercise 22 and answers (all) of the second volume of the fifth grade math book, go by yourself.

Mathematics (People's Education Edition) Exercise 2 1 All the answers are urgent! 1 calculation (horizontal direction, after reduction)

2 (horizontal) fill in the blanks

Half, two thirds, 0-3, 8-7.

Three fourths, two fifths and a half 1 four fifths

3( 1) Sixth grade * * * accounts for one fifth (2) Sixth grade 1, four fifths of second grade (one third of third and fourth grade, two fifths of sixth grade) (3) Omit.

4 ellipsis

5 Calculation (level)

Eight out of nine, ten out of eleven, 1 another quarter

Three tenths of a point.

6.( 1) Two tenths+Three tenths+Five tenths = Ten tenths

(2) 1- 1 1 = 1/ 1 1

7 Specific dimensions

Greater than less than = =

8 lve

I played alone.

I'm also in grade five, but we're done here.