This question is too simple:

First question

44*2=88

40*2=80

48*2=96

96+88+80=264

264/2= 132

Well, after a big meal, A and B averaged 40, and you told me everything. But I'm interested in asking for it for you. 132-88=44

132-80=52

132-96=36

the second question

15 is expressed as the sum of five natural numbers, and there is only one answer: 15/3=5.

15= 1+2+3+4+5

This is the number of pigs in five houses.

Third question

Now the face of each cuboid is equal to the four faces of a cube, and the cube has six faces, 6-4=2, 72/2=36 square centimeters, and 36*6=2 16 (square centimeters). This is the surface area of the cube.

The fourth question

Divided into three sections, plus three faces, 5.76/3= 1.92 (square decimeter).

1.92 is the base area, and 1.92*20=38.4 (cubic decimeter) 20 is the meter conversion.

The fifth question

The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36, which are optional lengths, respectively.

A * * * has nine factors, which are arranged and combined. C:9\3=84 (species) is a factor with a length of 36.

The sixth question

[5,7,9] = 315,315 * 2 = 630,315 * 3 = 945,315 * 4 = 1260, but

Question 7

120 = 2 * 2 * 3 * 5, and the factor is 1* 120, 2*60, 3*40, 4*30, 5*24, 6*20, 8 * 15.

The eighth question

Through the defect formula, we can know that when A*B*C is divided by the greatest common divisor B*C, the answer is a, the least common multiple is A*B*C* b number, the equation is A*B*C* b number =A*B*B*C*D, and both sides of A*B*C are cut off, so b number is equal to b * d.

These questions are simple and not difficult. Don't forget to divide it.