1, starting from one point, draw an angle in the direction of () with a ruler.

2、4? 8 stands for (), and its multiplication formula is ()

3. The line segment has () endpoints. After two points, you can draw () line segments.

4. 1m = () cm 17m-8m = () m。

5. The length of the pushpin is about 1 (). A big tree is 12 () high.

6. The scale from () to () on the ruler is 3 cm.

7、36=( )? ( )=( )? ( )

8、3? 3 means () () addition, and 3+3 means () () addition.

9. What is the maximum number of words in brackets? 16 >4? ( )， 10 & lt； 4? 4-( )

10, complete the formula. Five () thirty, () sixty-eight

Second, judge. That's right. Fight? , wrong. Fight? .

1、4 ? Five plus five? 4 The calculation results are the same. ( )

2. The product of two numbers must be greater than the sum of two numbers. ( )

3. The length of the line segment can be measured. ( )

4, 3 meters, 400 centimeters and 350 centimeters are arranged in the order from big to small.

400 cm > 350 cm > 3 m ()

The longer the sides of an angle are, the bigger the angle is. ( )

Third, choose. Fill in the serial number of the correct answer in ().

1, all () are equal in size.

A, angle; B, right angle

2. There is a rope with a length of 10 meter. It took 4 meters for the first time, 4 meters for the second time, and there are () meters left.

a、 10？ 4? 4=2 meters; b，4+4 = 8m

3. The formula reading 3 times 4 is ().

a、3+4； b、3？ 4; c、4？ three

4, 300 cm than 3 meters ().

A, dragons; B, short; C, the same length.

Fourth, calculation.

(1) Numbers are written directly.

8 ? 2= 9 ? 3= 7 ? 9=

6 ? 5= 48? 22=

17+28= 6 ? 7= 8 ? 7= 35+ 19=

7 1-50= 30-6= 72-8= 30+43= 45+7=

5 ? 6= 68+9= 50-3 1=

5 ? 7= 1 ? 1=

3 ? 4-6= 52-(8+9)=

6 ? 8+ 19=

(3) Fill in+,-,? .

24( )6= 18

4( )5= 20

6( )4=24

25( )5=30

5( )5=25

2( )2=4

(4) Formula calculation

What's the difference between the product of 6 and 7 (1) minus 19?

(2) What is the sum of six octuple 15?

(3) When both factors are 5, what is the product?

Verb (abbreviation of verb) application problem

1. Mom bought 4 meters of white cloth, and the printed cloth is three times as big as the white cloth. How many meters of printed cloth did she buy?

There are 8 red balloons in the shop, and the blue balloon is twice as big as the red balloon. How many are Blue Balloon and Red Balloon?

Xiao Ming has been reading story books for 4 days, reading 5 pages every day, and there are 20 pages left. How many pages are there in this book?

There are 10 flowers in two vases. How many flowers are there in one vase and four flowers in the other?

5. In the second grade of Xiangyang Primary School, four students made flags, and each student made five flags. ?

Ask questions first, write them on the horizontal line, and then answer them. )