p4

Fill in the appropriate numbers in the box.

3/2 3/2 15

14 9 9 14 4 9

Five-thirds, five-thirds, five-sixths.

Simplified ratio:

7:3 25: 1 1:5

13:9 27: 10 50:7

Write the numbers represented by. ....

-6 -3 0 4 7 9

Look at the picture to find the relationship:

28 is a multiple of 7, 14 is a multiple of 7, 4 is a multiple of 2, 28 is a multiple of 2, 14 is a multiple of 2, and 28 is a multiple of 14.

pregnenolone

1, statistics can't be sent, write it yourself.

2. Music 50 calligraphy 27.46%

3、 9: 16 5:7

p 10

Simplified ratio:

3:4 1: 12 162:25

1: 12 162:25 25: 1

Draw a picture (sketch)

1、 13:20

2、 9:8

3、 1: 19

4、 6:5

5、 7:4= 175: 100

p 1 1

1、 9 160 1 1 15

2、 2

3、 13 1

4. A: Up:1-24-9,

Down: 2-49-12.

A: B = 1: 1=3:2。

A: The area ratio is 3:2.

p 16

5/5 8/2

2/3 965438+39/0 9/50

Draw (omit)

p 17

2、+2 100 3、+ 1400 4、- 1300 5、-500 6、+3 100

Draw (omit)

Solve the problem:

8: 12: 15

8+ 12+ 15=35

I 140×35 8=32 (person)

Ii. 140×35 = 48 (person)

Iii. 140×35 points 15=60 (person)