1. Positive fraction, negative fraction are collectively referred to as (), integer and fraction are collectively referred to as () 2. Simplify the symbols of the following numbers: -（+6）= -（-3）= +（-5）= 3. Judgment: Rational numbers include positive numbers and negative numbers Both finite decimal and infinite circular decimal are rational numbers 2 2 3 3 A = B, but not necessarily a = B. () 4. Selection: The following statements are correct A. Positive and negative numbers are called rational numbers B. there is the smallest positive rational number C. There is no maximal positive rational number d. There is no maximal negative rational number D Please solve and answer in 30 minutes. Please refer to the sixth grade mathematics exercise book unit 1 of pep_ ∩)o

1. Positive fraction, negative fraction are collectively referred to as (), integer and fraction are collectively referred to as () 2. Simplify the symbols of the following numbers: -（+6）= -（-3）= +（-5）= 3. Judgment: Rational numbers include positive numbers and negative numbers Both finite decimal and infinite circular decimal are rational numbers 2 2 3 3 A = B, but not necessarily a = B. () 4. Selection: The following statements are correct A. Positive and negative numbers are called rational numbers B. there is the smallest positive rational number C. There is no maximal positive rational number d. There is no maximal negative rational number D Please solve and answer in 30 minutes. Please refer to the sixth grade mathematics exercise book unit 1 of pep_ ∩)o

1. Fraction, rational number
2.-6,+3,-5
3. Wrong, and 0
No. infinite acyclic decimal is not a rational number
|A | = | B |, but not necessarily a = B
A = B must have | a | = | B | (wrong)
4.C,D

When Li Yong read a book, he read one tenth of the whole book on the first day, and six more pages on the second day than on the first day. At this time, the ratio of the number of pages read to the number of pages not read is 1:3?

Suppose there are x pages in total, X / 10 on the first day, X / 10 + 6 on the second day, 3 / 4x x-x / 10 - (x / 10 + 6) = 3 / 4x x = 120, so there are 120 pages in total

P4 development and application of mathematics exercise book in the second semester of grade 6
Xiaoqiang's mother bought a unit's two-year bond of 5000 yuan the year before last, which is due this year. After deducting 5% of the interest, she will get a total of 5760 yuan of capital and interest. What's the annual interest rate of this bond? You have to save my life. It will be handed in tomorrow

If the annual interest rate is x, then
X ^ 2 times 5000 times (1-5%) + 5000 = 5760
The solution is x = 0.4
So, the annual interest rate is 4%

Urgent ~ ~ ~ Shanghai Sixth grade mathematics exercise book review questions answer - process 29 ~ 31 hurry up is Shanghai ~ ~ ~ 29 ~ 31 page process
Urgent ~ ~ ~ 29 ~ 31 pages, do you have it~~~~~~
Do you have any~~~

（2）2.25% 11.25 213.75 2.79% 13.95 265.05 3.33% 16.65 316.36

Shanghai junior high school sixth grade mathematics exercise book page 51 last question

The distance of a movement: arc a a1 + arc A1 A2 + arc A2 A3
120/180πr
=6.28（㎝）
B movement distance: arc B B1 + arc B1 B2 + arc B2 B3
=2πr
=6.28（㎝）
The distance of C movement: arc C1 C2
240/180πr
=4.19（㎝）

There are 480 fewer chickens and 14 more ducks in the farm. How many chickens and ducks are there in the farm?

480 △ 14 + 480 △ 14 × (1 + 14) = 1920 + 2400 = 4320 A: there are 4320 in total

Seek primary school mathematics four mixed operation problems! As long as 60 or so can!
It's better to be a little difficult!

1) 7034044÷(6799-3771)×3388= 2) 806+3504-5366515÷1855=
3) 6408-2595+1828×1514= 4) 4003449÷(7056-3643)×2850=
5) 1435+1431689÷901-1023= 6) (1710223-223)÷1520-828=
7) 2912+(3423-543)×2362= 8) (753+616)×341-272767=
9) 8917-(1624+113778÷27)= 10) 897×(700917-267)÷865=
11) 1559-(59+1036)÷66294= 12) (6701574+2082)÷(4783-1891)=
13) (2215161+689)÷(4409-3499)= 14) 339+(3716330-830)÷1500=
15) (853+781)×3029892÷1843= 16) 473077÷(3577-2094)×838=
17) 1304+(269005-1597)÷1857= 18) 4802+1077090÷1338-1604=
19) 1686916-1686417÷(402050÷550)= 20) 2497+(2743-255)×1029=
21) (2043+913)×850-1870673= 22) 952232-543006÷933×1635=
23) 1926211÷(2515-1334)×293= 24) (994772-722)÷2350-301=
25) 62513-61674÷(65208÷1716)= 26) 1577-810+497×237=
27) 1061+767916÷1028-641= 28) 1257×(755451-909)÷1602=
29) 628044÷(2257-1461)×301= 30) 2392×(1281341-2477)÷321=
31) 796390÷1085×1233-538472= 32) 22238898÷4906×4341-2590302=
33) (1970-845171÷2753)×574= 34) 182+464-271622÷806=
35) 4968579÷2877×2493-1273981= 36) 357994÷(822-260)×690=
37) 655270÷(1016-165)×552= 38) (9689874-194)÷3388-2029=
39) (400+161)×673-118257= 40) (1121+1355)×2770871÷1907=
41) 4679-3562+1498×932= 42) 710-(626+1252)÷1013070=
43) 387+(64591-736)÷129= 44) (11216801+151)÷(7637-3883)=
45) 3797+(8016539-2339)÷2280= 46) 7176-3083+846×2370=
47) 335-(1793+731)÷1191378= 48) 3361526-3357585÷(314127÷167)=
49) 1358+8840-14984541÷3861= 50) 765+1007×1219-67=

Is the law of operation an equation

I personally think: the operation law and formula expressed by letters is an equation, an indefinite equation with multiple variables. But quite a few teachers think that it is just an equation, a formula

According to what operation law to solve this equation?
12x*0.8=11x-350

Law of combination of multiplication
a*(b*c)=(a*b)*c
So 12x * 0.8 = 12 * 0.8 * x = 9.6x
So 9.6x = 11x-350
1.4x=350
x=350/1.4=250

Formula or equation calculation
What percentage is 45 kg less than 60 kg?

(60-45) divided by 60 = 25%
25% less