Midterm examination paper

Class name and student number

1. Fill in the blank: (65438+ 0 points for questions 4 and 6, 0 points for the rest, ***32 points)

1, which indicates the shaded part below with a fraction.

( ) ( ) ( )

2、2 14 =( )4 =27( ) =( )÷( )

3. In the score 5a, a is a natural number. When a is (), this score is a true score; When a is (), this score is false; When a is (), this decimal value is an integer; When a is (), this score is equal to 16.

4. In 1~ 17, the prime number has (); The composite number has (); Even numbers have (); Odd numbers have ().

5, because a = 2× 3× 5; b = 2×2×2×3； So the greatest common factor of a and b is (),

The least common multiple of a and b is ().

Within 6 and 50, the multiple of 6 is (); The multiple of 8 is (); The common multiple of 6 and 8 is (), of which the smallest is ().

7, 1082 plus at least () is a multiple of 3; Subtract at least () to become a multiple of 5.

8. The sum of three consecutive odd numbers is 5 1. These three odd numbers are (), () and () respectively.

9. Fill in the same number in □ so that 783□ is a multiple of 2, 60□3 is a multiple of 3, and 149□ is a multiple of 5. The quantity of □ is ().

10, fill in ">,< or =".

10 14 ○47 49 ○6 1 1 1920 ○20 19 278 ○27 12 67 ○45 927 ○ 1236

There are () 1 1 and 47; 25 19 is (); 38 of 24 is (); 13 of () meters is 5 meters.

12, it takes 8 days for Xiao Ming to read a book, and it takes 10 days for Xiao Qiang to read the same book. Both of them studied for four days. Xiao Ming finished reading part () () of the whole book, and Xiao Qiang left part () () of the whole book.

13, fill in the form:

Area product of the height at the bottom of the figure

Parallelogram12 "60" 2

6.2m 2. 1m

Triangle 13dm 7dm

14㎝ 35㎝2

The upper bottom of the trapezoid is 7m long, the lower bottom is 3m long and 20m2 wide.

Upper bottom 2. 1㎝, lower bottom 5.9㎝ 2.2㎝.

Add 8 to the numerator of 14 and 49, and the denominator should be () to keep the size of the fraction unchanged.

15, a boatman transports tourists from the north and south across the river, which can be transported five times per hour. If the boatman used to be on the north shore, the boatman will be on the () shore at 7: 00 a.m., the boatman will be on the () shore at 9: 00 a.m., and the boatman will eat at noon 12. (Fill in South and North)

16, fill in the blanks according to the rules: 15, 2 10, 315,420, (), …() 100, …n ().

Second, the judgment question. (Mark "√" for the right and "×" for the wrong) (each question 1, 7 * * *).

1, except 2, all even numbers are composite numbers. ( )

2. The score less than 45 and greater than 25 is only 35. ( )

3. The area of a parallelogram with a base length of 2 cm and a height of 3 cm is 6 cm. ( )

4, 2 tons of 13 is as heavy as 1 ton of 23. ( )

5. Divide the 3m-long rope into 7 pieces, each piece is 37,17m. ( )

6.7 10 yuan is less than 7 cents. ( )

The number of boys in this class is 59, so the number of girls is 45. ( )

Third, multiple choice questions. (Choose the serial number in brackets) (**9 points)

1, the maximum factor of a number is 18, the minimum multiple of a number is 24, and their maximum common factor and minimum common multiple are () respectively.

1 2, 36 2 6, 72 3, 48 4 72, 6 5 I don't know.

2. The side length of a square is odd, and its circumference must be ().

① Odd number ② Even number ③ Prime number ④ Composite number ⑤ cannot be filled in.

3. The area of the parallelogram below is calculated correctly ().

① 15×4 ②6× 15

③6×4 ④ 15×4÷2

4, 58 tons ().

① Divide 1 ton into 8 parts and take 5 parts; ② Divide 5 tons into 1 share, and take 5 shares.

③ Divide 8 tons into 8 parts and take 5 parts; ④ Divide 5 tons into 8 parts and take 5 parts.

5. In the donation activity, Xiaogang donated his own 15 yuan, and Xiao Qiang donated his own 23 yuan. Xiao Gang and Xiao Qiang ().

Xiao Gang donated more, Xiaoqiang donated more, Xiaoqiang donated more, and it is impossible to judge.

6. A wooden stick is sawed into 9 segments, and the next segment is sawed for 9 segments ().

①19②18③11049 times.

IV. Practical application: (***34 points)

1. Write the score as required: (***6 points)

(1) True fraction with denominator of 7:;

(2) The molecule is 5:

(3) The simplest fraction in which the sum of numerator and denominator is 15:

2. Turn the following numbers into the simplest scores. (*** 10 point)

1624 =( ) 2665 =( ) 3468 =( ) 1 1 12 1 =( ) 3660 =( )

100 125 =( ) 3248 =( ) 1688 =( ) 399 1 =( ) 2840 =( )

3. General points. (***8 points)

38 and 16 56 and11858 and 37 1930, 3 10 and 7 15.

4. Solving equations: (***8 points)

6x+x = 42 1.2x-x = 0.96 5y-3.7 = 8.57 a+3×4 = 40

Five, life problem solving: (4 points for each question, ***20 points)

1. Party A goes to the library every 9 days and Party B goes to the library every 6 days. Both of them went to the library on July 29th. Excuse me, how many days later, the two met again in the library? When was it?

2. When typing, A uses 12, B uses 23 hours, and C uses 35 hours. How should they arrange from fast to slow?

3. The two trains, A and B, travel in opposite directions from two places 700 kilometers apart at the same time. Train A travels 85 kilometers per hour and train B travels 90 kilometers per hour. How many hours did the two trains meet?

Xiao Ming asked grandpa how old he is this year. Grandpa said, "I am eight times older than you and 56 years older than you." Clever you, can you figure out how old Xiaoming is this year? How old is grandpa? (column equation solution)

5. 230 people from the fifth grade of the experimental primary school visited the museum. How to rent a car economically? Complete the following table:

A bus/vehicle

A bus/car

Daily rent/yuan

Extra points for intransitive verbs: (30 points, 5 points for questions 3 and 4)

1, two cars, A and B, start from two places at the same time and drive in opposite directions. It is known that car A travels 45 kilometers per hour and car B travels 35 kilometers per hour. They meet at the midpoint of 10 km, and the two places are () km apart.

2. The school exhibited the works of students in the fourth, fifth and sixth grades at the painting and calligraphy exhibition, including 65 in non-fourth grade, 45 in non-fifth grade and 60 in non-sixth grade; Grade four (), grade five () and grade six ().

3. A fraction, if the molecule subtracts 3, it is12 after simplification; If you add 6 to the denominator, it will be12 after simplification; This score is ().

4. Miss Wang is a writing teacher, teaching grades two to five. On Friday, she has four classes, on the fourth floor. The floors are distributed from low to high, and the office is on the first floor. Please describe Mr. Wang's day's work according to the picture on the right.