Class name, student number score

I. Fill in the blanks (26%)

(1) Divide six peaches into two parts, each part is the total number of peaches, and each part is () peaches.

(2) There are () decimal units, plus () such units are equal to 1.

(3) Of the three numbers 7, 1 1 and 22, the prime number is (), and () and () among these three numbers are prime numbers, and () and () are also prime numbers.

(4) A number is both a divisor of 32 and a multiple of 32. This number is ().

5] Fill in the appropriate unit name in brackets.

The surface area of the pencil case is about 470 (), and the volume of the motorcycle fuel tank is 8 ().

Xiaoyu's height is 147 ().

[6]1m20cm = () m5.2m = () m3 () m3 decimeter.

35 square decimeter = () square meter 4050ml = () liter () ml.

Once the sum of three consecutive odd numbers was 183, and the smallest odd number was ().

(8) The prime factor of the decomposition of known numbers A and B is shown in the right figure: A=2×3×5 B=2×5×7, then the greatest common divisor of A and B is () and the least common multiple is ().

Levies can be divisible by 2, 5 and 3 at the same time, the largest two digits are (), and its prime factor is ().

⑽ A larger cube needs at least () identical cubes.

⑾ Master Wang plans to make a goldfish bowl with the following five pieces of glass, and the glass should be made of ().

⑿ The product of two prime numbers is 94, and the sum of these two prime numbers is ().

[13] If A÷B= 12, the greatest common divisor of A and B is (), and the least common multiple of A and 12 is.

( )。

[14] A circular runway is 400 meters long. Little Wang Pingjun runs 8 meters per second, and Lao Zhang runs 5 meters per second on average. Now Xiao Wang and Lao Zhang start from the starting point at the same time, and meet at the starting point for the first time () seconds later.

Second, true or false (5%)

(1) Natural numbers are either odd or even. ………………………………………………( )

40 is divisible by 20. ………………………………………………………………… ( )

(3) A cube with a length of 6 decimeters has the same volume and surface area. …………………………………( )

(4) The end of a number divisible by both 2 and 5 must be 0. ………………………………… ( )

5] The side length of the cube is expanded by 3 times and the volume is expanded by 9 times. ……………………………………( )

Third, multiple-choice questions (5%)

(1) 123456 is ().

Multiples of prime number b and composite number c

(2) Xiao Ming looks at the same cube from different directions. In the picture below, () is what he saw from the front.

B.C.

(3) The product of two adjacent natural numbers must be ()

A even number b composite number c odd number

(4) In the following groups of numbers, the two numbers in group () are both composite numbers and prime numbers.

A 5 and 24 B 4 and 30 C 8 and 15

5] The following statement is true ().

The divisible formula can be divisible by b, but not by c, let alone by C.

Fourth, the calculation problem (33%)

(1) Recursive Equation Calculation (12%)

① 10÷2.5×4+5 ② 3.8× 1.5+4×0.7 ③ 5.3×6.3+5.3×4.7-5.3

⑵ Solving equation (9%)

①5x- 1.2 = 1.8② 1.7+7.8-x = 5.6③6.4x-x = 32.4

(3) Find the greatest common divisor and the least common multiple of the following two numbers. (6%)

① 25 and 40 ② 48 and 36

(4) Find the least common multiple of the following three numbers. (6%)

① 12, 16 and 3026, 15 and 20.

Verb (abbreviation of verb) statistics (6%)

In order to celebrate May Day, a class wants to hold a competition in one of the four events: rubber band jumping, football, table tennis and relay running. For the sake of prudence, the class committee will investigate each student's favorite degree in the above four activities and make a histogram as follows:

Answer the following questions according to the bar chart above:

(1) Each grid on the vertical axis represents () people;

1, fill in the blanks.

(1) A decimal, starting from a certain position in the decimal part, or appearing successively, is called a decimal.

(2) In 3.82, 5.6, 0.35, 0.002, 2.75, 3.2727 ... are finite decimal numbers, but () are cyclic decimal numbers ().

(3) 8.375375 ... can write.

2. Write the approximate values of the following cyclic decimals (keep three decimal places).

0.3333……≈ 13.67373……≈

8.534534……≈ 4.888……≈

3. Judgment (put "√" in the brackets for the right and "×" for the wrong)

(1) 1.4545 ... one decimal place is reserved) ≈ 1.4 ()

(2) The cycle segment of 2.453453 … is 435. ( )

(3) Circular decimals are infinite decimals. ( )

(4) The last digit of the decimal part of1.2323 … is 3. ( )

4. Calculate the following problems and express the quotient with cyclic decimals.

13÷ 1 1= 57÷32= 1 1.625÷9.3= 30. 1÷33=

Intelligent upgrade:

1. Can you compare the sizes of these decimals? Give it a try! (I can't get the circulation point when I send it. )

0.66○0.6 8.25○8.25 5.4 1○5.4 1

3.888○3.08 7.28○7.28 0.99○0.9999

2. Use simple symbols to represent the following cyclic decimals.

3.2525…… 17.065 165 1…… 1.066…… 0.333……

3. multiple choice questions. (Fill in the serial number of the correct answer in brackets)

The loop segment of (1) 2.235235 ... is ().

①2.235 ②2.35 ③235 ④235

(2) Among the following figures, the largest is ()

①3.8 1 ②3.8 1 ③3.8 1 ④3.8

(3) Numbers require three decimal places, and should be calculated to () decimal places.

① Two, two, three, four, four, five.

4. Application questions

Students from three classes in Grade Five took part in tree planting activities, and planted 220 trees. Class one planted twice as many trees as Class two, and Class two planted 20 more trees than Class three. How many trees are planted in each class?

Intelligence:

The sum of the two numbers is 1 1.63. Xiao Qiang moved the decimal point of an addend to the left due to carelessness in calculation, and the sum was 5.87. What are the first two addends?