Barrel oil

use

five

three

(

Barrel oil

) as a unit

1

unit

1

Average

(

5) copy

(use

)

battle flag

(

3 copies)

2、(4)

Three =( 15

)÷20=(8

)

Six = 24

( 18)=0.75

3、

Root 5 meters

Average cutting of iron wire

Section 8

Each paragraph accounts for the whole.

( 1/8)

Every paragraph

(5/8

) meter

4, 5 meters

nine

Meters (

9)

(5

) equal

5、

Digital unit

eight

simple

count

(2

)

6、

mother

poor

12

change

simple

count

five

three

Qiu Yuan

count

( 18/30

)

Seven, seven

two

Increase by 4

make

count

change

Parent should be added (

14)