4 ÷ 2/3 = 4× 2/3 = 6 10 ÷ 2/5 = 10× 5/2 = 25

6 = 15÷7, 35 =15× 6, 7 = 2 and 0 of 65438+2.

5/8 1=5×8=40

3/2/7/8 = 3/2× 8/7 =12 =1and 5/7?

3 out of 4 in 10 = 4 out of 3×5 in10 = 6 out of 25?

36' s 5÷ 12 1 = 36' s 5× 12 = 3' s 5 = 1 and 3' s 2?

11÷ 54+22 =1× 22+54 = 3 =1and1.

2. Solve the equation (clearly write out each step of the process)

7x = 5 out of 7

X = 5/7 ÷ 7

x = 5/7×65438/7+0

x=49，X = 5

3x = 5, 8 = 8, 3.

X = 3 out of 8 ÷ 3 out of 5

X = 3/8× 5/3

X = 5 out of 8

1x = 65438+9/00。

X = 65438+9/00，x= 10/4。

X = 65438+9×4 divided by 00.

X = 18 times 5.

X=3 3/5

Step 3 fill in ">"

6 out of 7, 7 out of 8 (>) 6/7, 4/5 and 4/3 (

13 8÷ 1(=) 13 8 1 10 3(& gt； ) 1

4. It is known that a÷4 is 1=b÷5 is 2=c÷3 is 1(a, B and C are all not 0), so the order of A, B and C is (B) > (C) > (A).

5. 1÷3/5 = 1×(2)/5 (3) = (65438+3/00)

3/4/6 1 = 3× (1)/4 (6) = (9/2 = 4 and1)

6. The length of a classroom is 8 meters, and the width is 3/4 of the length.

(1) How wide is the classroom?

(2) How many square meters is the area?

Solution (1) The width of the classroom is 8× 3/4 = 6 (meters).

(2) The area is 8×6=48 (square meters)

7. The ball falls freely from a height of 25 meters, bounces immediately after touching the ground, bounces again after falling behind, and repeats for many times, and the height of each bounce is 3/5 of the height of each fall. How high is the third bounce?

The first solution: 25× 3/5 = 15 (m)

Second time: 15× 3/5 = 9 (m)

Third time: 9× 3/5 = 25/5 = 5 and 2/5 (meter)