() multiply by 8 / 3 = 8 / 9 divided by () = 3 / 2 minus () = 4 / 5 plus () () multiply by 8 / 3 = 8 / 9 divided by () = 3 / 2 minus () = 4 / 5 plus ()

() multiply by 8 / 3 = 8 / 9 divided by () = 3 / 2 minus () = 4 / 5 plus () () multiply by 8 / 3 = 8 / 9 divided by () = 3 / 2 minus () = 4 / 5 plus ()

(1 / 8) times 8 / 3 = 8 / 9 divided by (8 / 3) = 3 / 2 minus (1 / 3) = 4 / 5 plus (- 7 / 15)

The radius of the bottom of a cylinder is 2 m and the height is 5 m. calculate the surface area and volume

Bottom circumference = 2x3.14x2 = 12.56cm
Bottom area = 3.14x2x2 = 12.56cm2
Side area = 12.56x5 = 62.8cm2
Surface area = 62.8 + 12.56x2 = 87.92cm2
Volume = 12.56x5 = 62.8 cm3

What's 5 out of 8 * 20%
And 25-1 / 4=

5 of 8 * 20% = 5 / 8 * 1 / 5 = 1 / 8
25% - 1 / 4 = 1 / 4 - 1 / 4 = 0

In 1-100, how many natural numbers are multiples of 2 or 3?
How many are multiples of 2 but not multiples of 3? How many are multiples of 2 but not multiples of 3?
The second question is wrong, as follows:
How many numbers are there that are neither multiples of 2 nor multiples of 3?

There are 50 multiples of 2
There are 33 multiples of 3
There are 16 multiples of 6
Is a multiple of 2 but not a multiple of 3 50-16 = 34

Simple calculation of 12 × 18 + 18 × 36
Let's simplify the fourth grade questions

12×18+18×36 =18*(12+36)=18*48=18*(50-2)=18*50-18*2=900-36=864

Calculate (A & # 178; - 2Ab + B & # 178; - A + b) / (a-b) (a + b) / # 178; / (a-b)

a-b-1
(a + b) of A-B;

Put the numbers - 4, - 3, - 2, - 1,0,1,2,3,4 into the square, so that the horizontal, vertical, diagonal and diagonal three numbers add up to 0

-1 4 -3
-2 0 2
3 -4 1

2x-3y = - 4,7x + y = 9

y=9-7x
2x-3(9-7x)=-4,x=(-4+27)/23=1
y=9-7=2

Answers to supplementary exercises in Mathematics Grade Five

It should be 45444664. I don't know if I'm right
It's the same as above. It should be right

If the value of the algebraic expression 3x plus 5 is not greater than the value of 7x minus 3, the value range of X is

Greater than or equal to two