1, a number written directly. (65438+ 0 points for each question, ***20 points. )

24? 8= 27+72= 27? 4= 20-20? 5=

9? 7= 98-89= 7? 7= 40-23+ 17=

7? 3= 9+6 1= 6? 8= 9? 3? 3=

70-2 1= 35? 5= 70? 7= 73-8? 5=

32? 7= 0? 8= 8+8? 4= 0? 6+36? 4=

2. Clever calculation. (2 points for each question, ***8 points. )

47+29=( )+( )=( )

85-38=( )-( )=( )

4? 4+5? 4=( )? ( )=( )

15? 9-8? 9=( )? ( )=( )

3. Fill in the appropriate number in (). (65438+ 0 points for each question, ***6 points. )

64+( )= 100 ( )? 8=74 32=()? 5+( )

8=( )? 8 ( )? 8=6? ( ) ( )? 2=( )? four

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

Both factors are 7. What is the product? The divisor is 9, the dividend is 72, and what is the quotient?

Second, the concept part (***30 points)

1, fill in the blanks. (1 question 4 points, 6 questions 2 points, the rest 1 point, ***20 points)

(1) Circle and fill in.

★ ★ ★ ★ ★ ★ ( )? () = ()

★ ★ ★ ★ ★ ★ ( )? () = ()

★ ★ ★ ★ ★ ★ ( )? () = () copies

(2)8 is () times that of 4, and 3 times that of 9 is ().

(3)□? 5=7△, the maximum δ is (), then □ is ().

(4)42 MINUS 7 is 0, which needs to be subtracted () times.

(5) Build a cube frame with balls and sticks. The picture on the left is still missing ()

A ball, a stick.

(6) To find the sum of nine 5-connected sums, you can use the multiplication formula ()? () to calculate.

(7) What can I fill in ()?

26+()& lt； 42 30-()& gt； 6 7? ()& lt63

(8) With 39 sticks of the same length, at most () individual squares can be built, and there are () left. Both cuboids and cubes have () faces and () vertices.

2. True or false. (Right? , wrong number? ) (2 points for each question, ***6 points)

(1) To spell out a big cube, you need at least four small cubes of the same size. ( )

(2) At 3: 30 in the afternoon, the angle between the hour hand and the minute hand is just a right angle? ( )

(3)45? 5=85 ? ( )

3. multiple choice questions. Fill in the letters before the appropriate answers? ()? (2 points for each question, ***4 points)

(1) Among the following numbers, () is not a square number and () is an odd number.

A.9 B. 64 C. 8

(2) Graphics, what you see from above is (), and what you see from the right is ().

A. BC

Third, the application part (5 points for each question, ***30 points)

1. The school choir is divided into 8 rows, with exactly 9 people in each row. How many students are there in the chorus?

2. Class 2 (1) has 45 students. If 8 people play games in groups, how many groups can a class be divided into? How many people are left?

3. There are 10 oranges and 5 apples. How many times are oranges?

Each ship can carry 6 people and 58 students. Is 9 boats enough?

5, reading, read 36 pages in 6 days, haven't finished reading 9 pages. How many pages are there in this book?

6. Statistics: The statistics of the number of people participating in interest groups in Class 2 (6) are as follows:

Chorus, painting, technology, chess.

No. 16 14 4 8

(1) Complete the statistics table according to the statistics table. (Draw the horizontal bars of the drawing group and the chess group)

(2) The number of people participating in the chorus group is () times that of the chess group.

(3) There are () people in these four groups.

(4) The painting group donated () yuan more than the chess group.