1 ÷ 0.2 = 5/6 0.56 ÷ 0.23 = 56/23 2 1 17÷5 1= 1/63.

13 ÷ 39 = 1/30, 4 ÷ 1.5 = 8/ 15, 1÷ 12, 65438+

7 in 4 ÷12 =1218 in 9÷7 in 3 = 56/27 1 in 4 = 4/3.

5÷ 1 1 = 1 1/2 1 1 = 14 ÷ 2 1 = 2/33 5/8.

65438+9 is 00, 3 is 5 = 3/29, 8 is 3 = 1/3, 65438+3 is 00, 10 = 9/ 100.

0 of 8 ÷ 5 = 0

(2) Calculation (please write down the calculation process)

5 out of 61+5 out of 6

=(5/6)*2+5/6

=5/3+5/6

= 10/6+5/6

= 15/6

=5/2

3/5-4/5 1.6

=3/5-(4/5)/(8/5)

=3/5-(4/5)*(5/8)

=3/5- 1/2

=(3*2-5)/ 10

= 1/ 10

2 1 4×5 9÷7 12

=(4/2 1)*(9/5)/( 12/7)

=(4/2 1)*(9/5)*(7/ 12)

= 1/5

2/7 ÷ 65438+9/5/04

=(2/7)*( 14/9)*( 1/5)

=4/35

(3) Solve the problem (please write down the calculation process)

1. Xiaohong's chicken laid 15 eggs a day, each weighing 3/4 kg. How many kilograms does each egg weigh on average?

3/415 =1/20kg

2. Uncle Wang goes to work by bike every day, with a speed of 1.5km per minute and a distance of 5.4 km from home to work. How many minutes does it take to get there?

5.4÷ (4/15) = 81/4 = 20.25 minutes.

3. A batch of goods * * * has 50 2/5 tons, and a transportation team can transport 25 6/5 tons 1 ton every day. How many days can it be finished?

(50+2/5)/(25+1/5) = (252/5) ÷ (126/5) = 2 days.

4. It is known that five workers repaired 64/25 km of road within 15 hours. How many kilometers of roads can each worker repair per hour?

(25/64)÷( 15/4)÷5=(25/64)*(4/ 15)*( 1/5)= 1/48

A clothing factory wants to process a batch of clothes. According to the calculation of 9/5m cloth for each suit, it is found that the existing cloth can be processed 1080 sets. Later, the design was optimized, and it was found that13/18m cloth was enough for each suit. How many sets of clothes can be processed?

(9/5)* 1080÷( 18/ 13)=(9/5)* 1080*( 13/ 18)= 1404