Ask for the "Huanggang Small Champion's Exercise Book for Quick Calculation of Oral Calculations", the first volume of the sixth grade of People's Education Press, page 22.

Page 22:

Lesson 65438:

1.2 1/4÷6=7/8 2 1/4÷7/8=6

1/6÷3/ 10=5/9 1/6÷5/9=3/ 10

2.5/6 26/7

2/3 7/ 13

3.( 1)4 1 1/4 1/4 2/27

(2) 1/3 3/25

4.( 1)2/5÷3=2/ 15

(2) 16/2 1÷3= 19/63

Page 23:

5.28/29 ÷ 4 = 7/29 meters

Lesson two:

1.( 1) Draw a dotted line in duplicate: 4/7 ÷ 2 = 2/7.

(2) Divide horizontally into 3 parts and draw the formula of 4 parts: 4/7 ÷ 3 = 4/2 1.

2. 1/6 5/64 1/3 5/24

1/4 1/2 1/8 18/5 1/6 3/5

( 1) 3/7 5/8 7/8

1/7 1/8 7/ 16

(2) 2/5 2/7 1/ 16

2/5 2/7 1/ 16

4.2/7 8/75 8/55 7/ 120