Name _ _ _ _ _ _ _ Score _ _ _ _ _ _ _ _

Fill in the correct answers in brackets. (2 points for each space, ***20 points)

(1) Xiaojun sits in the fourth row of the third column in the classroom, which is indicated by (3,4), and Xiaohong sits in the sixth column of 1 row, which is indicated by (? ,? ). (5, 2) The students represented sit in the first place (? ) column (? ) ok.

② ? Ton = () kg hour = () min?

③ ? The reciprocal of 2 is (? ), the reciprocal of 1.2 is (? ).

④ ? Rewritten into two division formulas (), ().

(5) Rainy days account for sunny days, which is (? ) is the unit "1". What is the ratio of rainy days to sunny days? ) 。

⑥ ? (? ):(? )=5 ÷ 4 = 20 : (? ) = ( ):20 = ? = () (Fill in decimal)

⑦ 0.3

: 1, and the former term is 0.3 times of 10. To keep the proportion unchanged, the latter item 1 should also be (? ), this is the application.

(? ) naturally.

The ratio of the degrees of the two acute angles of a right triangle is 3: 2, and the minimum angle is (? ) degrees.

There are 25 boys and 20 girls in Class 6 (1). What is the ratio of girls to boys? ), boys account for the whole class.

Second, judge whether it is right or wrong (mark "√" for the right, "×" for the wrong, and ***5 points)

(? A kilo of cotton is as heavy as a kilo of iron. ?

(? ) 2 because? × ? = 1, so it is reciprocal.

(? ) 3 "The number of girls is the number of boys?" The number of boys is regarded as the unit "1".

(? (4) If M ÷ N = 2.5, then M ×? = 2.5 。

( ? (5) Boys on the dance team 12. The ratio of male to female students is 3: 4, and there are 9 girls.

Iii. Fill in the correct answer serial number in () (2 points for each question, *** 10).

(1) It takes Party A 8 minutes and Party B 9 minutes to walk from school to the cinema. The distance ratio between Party A and Party B per minute is ().

A.8 :9？ B.9:

⑵ M ÷N = (M, n are not 0), M ()N n n.

A.> B.< C.=

(3) Multiply by a number, the product is, what is this number? The formula is: ()

A.b? C.

(4) 60 kilograms is equivalent to 80 kilograms ().

A. BC?

5] Dissolve 20 grams of sugar in 200 grams of water, and the ratio of water to sugar water is (? )。

A. 1: 10 B。

1 1: 1? C. 10: 1 1

Fourth, calculation? (***33 points)

1. Direct calculation (65438+ 0 points for each small question, 7 points for * * *)

= ? = ? .2 =

= = = 1÷ 1.5=

2. Simplify and find the ratio. (2 points for each question, ***8 points)

1 Simplified scale? ② Find the ratio.

48 minutes: 1 hour? 2.8 :0.8? 1 m: 45cm

3. How to calculate as simple as possible (3 points for each small question, *** 12 points)

× + × 〔 1- (+ )〕÷

× ÷ × ? 66 ×

4. Column calculation (3 points for each small question, ***6 points)

(1) It is known that the product of two factors is a factor 15. What is the other factor?

(2) What are the quotient of addition and division, sum, multiplication and product?

Five, hands-on and operation? (***6 points)

First, write the position of each vertex of triangle ABC, then translate triangle ABC downward by 5 units to draw a graph △A'B'C', and then write the position of each vertex of the obtained graph.

a′(，)，B′(，？ )，C′(，)

Six, solve the problem (***26 points)

1. Only column type is not counted (6 points)

The Young Pioneers Brigade repurchased 360 children's books, including science and technology books, literature and art books and comic books.

(1) How many books are there on science, technology and literature?

?

(2) How many more literature books are there than science books?

?

(3) How many comic books are there?

2. Solve mathematical problems in life (4 points for each question, 20 points for * * *).

(1) A rectangular vegetable field with a circumference of 80 meters, with an aspect ratio of 5: 3. What is the area of this vegetable field?

(2) The school table tennis team has 12 players, less than the Rubik's Cube team. How many players are there in the Rubik's Cube team?

(3) The road construction team built a 10 km highway. On the first day, it will be completed in full length, and on the second day, it will be completed in kilometers. How many kilometers are left?

A coat is more expensive than a pair of trousers, 72 yuan. The price of trousers is the same as that of coat. How much is a pair of trousers?

(5) The number of art group in experimental primary school belongs to science and technology group, and the number of sports group belongs to science and technology group. There are 40 people in the art group and how many in the sports group?