A few math problems for 6 years old, urgent!

1 p q is the opposite of each other p q 0 original |0－1＋3|＝22 ∵|a|＞|b|and a is negative, b is positive |a＋b|-a-b original -a+(-a-b)+(b-a)-b=

3a-b3 ∵|x+3|≥0 |y-9|0 is known by the meaning of the title|x+3|=|y-9|=0 ∴x+3=0 y-9=0 ∴x=-3 y=9

Original = |-3-9|=12

4 A b is the opposite of each other a+b=0 c and d are the reciprocal of each other cd=1 original formula=0 1=0

1:p+q=0 3-1=2 **********==22:[a]=-a [a+b]=-a-b [b-a]=b-a [b]=b *****===-3a

3: If the question is correct, [x+3] and [y+9] are both positive numbers, not opposites. Unless both are 90 x=-3 y=9 then **********==12

4: a+b=0 zero multiplied by any number is equal to 0 **********==0 depressed, almost forgot how to do it, I am a math student...

1.Boys make up 1-2 5 = 3 5 of the class

The class size is 27 3 5 = 45.

2.In the morning, I played 1+1 8=9 8 in the afternoon, so I played 18 9 8=16 pages in the afternoon.

A total of 18 + 16 = 34 pages were typed in the morning and afternoon, and these accounted for 1-1 18 = 17 18 of the total number of pages, with a total of 34 17 18 = 36 pages.

3.Let there be 4x hens, then, the chicks have x 5 8 = 8 5 x from the title, 8 5 x = 480, so x = 480 8 5 = 300, then the hens have 4x = 4 * 300 = 1200.

One, 27 (3 5) = 45 Second, set x pages in the afternoon, a total of y pages, x(1+1 8)=18 x=16 y=(16+18) (17 18)=36 Three, set x hens, 480 * (5 8) = (1 4) x, x = 1200

1.There are 45 people in the 61 class, 27 divided by 3 5

2.Hit 16 pages in the afternoon.

3.There are 1,200 hens, and these problems are all done with equations!

Let the principal amount be x

If x+x* does not have an unknown number, it can be understood that the APR is excluding tax.

Cross-sectional radius: 6 2 = 3 decimeters.

For each additional section, the area of the section is increased by 2.

Sawing into 4 sections, the surface area increases:

square decimeters. Sawn into 5 sections, add:

square decimeters.

The area of 6 circles in the case of four sections, the area of 10 circles in the case of 5 sections, and the area of no circle is d square 4

What is added is only the area of the circle.

These are too simple for you to ask.

2) Dad: 1 2 x 3 = bag).

Little Red: 1 3 x 3 = 1 (bag).

bag) 3) one diameter per week, so (10-1)x5x29x1090(cm).

4) Set male x people, 360 = (1 + 1 4) x

x = 288288 + 360 = 648 (person).

Wu Zhenwei: Your friend called you on QQ voice!

Two 2 x 3=3 2 bags - Daddy ate 1 3x3=1 bag - Little Red ate.

2. (3 2+1)x3=15 2 So mom wants to buy 8 bags.

3. Roll 10 times and move the length of 9 diameters, that is: 5x2x9=90cm Fourth, let's set the number of boys as x, then the number of girls is (1+1 4)x.

Yes (1+1 4)x=360 gives x=288288+360=648 (person).

A: There are 288 male students, and the whole school has 648 students.