ngày THI ĐẤU OLM tối nay, ngày 28/04/2023 để so tài với học sinh toàn quốc!!!

Ôn tập kiểm tra học kì 2 hiệu quả, đạt thành tích cao!

K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

Tất cả Toán Vật lý Hóa học Sinh học Ngữ văn Tiếng anh Lịch sử Địa lý Tin học Công nghệ Giáo dục công dân Âm nhạc Mỹ thuật Tiếng anh thí điểm Lịch sử và Địa lý Thể dục Khoa học Tự nhiên và xã hội Đạo đức Thủ công Quốc phòng an ninh Tiếng việt Khoa học tự nhiên
Mua vip
NH
Nguyễn Huy Hoàng
15 tháng 8 2015 - olm

calculate: 1 2/5 x 3 5/7 = A/5 The value of A is?
#Toán lớp 5
1
NN
Nguyễn Ngọc Quý
15 tháng 8 2015

\(1\frac{2}{5}\times3\frac{5}{7}=\frac{A}{5}\Leftrightarrow\frac{7}{5}\times\frac{26}{7}=\frac{26}{5}\)

Vậy A = 26

Đúng(0)
DK
Dragoon Knight
2 tháng 4 2015 - olm
Question 1:Compare:  Question 2:Compare: A =  and B = Answer: A  BFill in the blank with the suitable number Question 3:Calculate: The value of A is  Question 4:Calculate: The value of A is  Question 5:Find two consecutive even numbers if the first number is  of the second number.Answer: The second number is  Question 6:There are 49 students in a class. Boy students are  the number of girl students. There are  girl students in this class. Question 7:How many natural numbers not greater...
Đọc tiếp

Question 1:
Compare: 

 

Question 2:
Compare: A =  and B = 
Answer: A  B

Fill in the blank with the suitable number

 

Question 3:
Calculate: 
The value of A is 

 

Question 4:
Calculate: 
The value of A is 

 

Question 5:
Find two consecutive even numbers if the first number is  of the second number.
Answer: The second number is 

 

Question 6:
There are 49 students in a class. Boy students are  the number of girl students. There are  girl students in this class.

 

Question 7:
How many natural numbers not greater than 1665 which are divisible by 5?
Answer:  numbers

 

Question 8:
Calculate: 
The value of A is 

 

Question 9:
How many 3 - digit numbers are divisible by 2, 3 and 5?
Answer:  numbers.

 

Question 10:
If  then  is 

 
#Toán lớp 5
2
TN
Trịnh Nguyễn Tuấn Anh
9 tháng 4 2015

I'm sorry to say that I don't see any mathematical expressions. And you should translate your questions into Vietnamese so all people can answer them.

Đúng(0)
NH
Nguyễn Hà Linh
6 tháng 8 2016

I am very sorry but I cannot see any numbers to answer your questions

Đúng(0)
BM
Bùi Minh Hiển
15 tháng 3 2016 - olm
Question 2:The number of factors of 120 isQuestion 5:Find four integer numbers a,b,c,d such thata + b + c + d = 1a + c + d = 2a + b + d = 3a + b + c = 4Answer: (a;b;c;d)=() Question 6:The 215th  term of the expression A=1-7+13-19+25-31+⋯ isQuestion 7:A natural number will be increased by 9 times ifthe digit 0 is written between tens digit and units digit.The number isQuestion 8:Calculate: 1×2+2×3+⋯+100×101=Question 9:The root of the equation (x+1)+(x+2)+(x+3)+⋯+(x+100)=5750 is x=Question...
Đọc tiếp

Question 2:
The number of factors of 120 is

Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=() 

Question 6:
The 215th  term of the expression A=1-7+13-19+25-31+⋯ is

Question 7:
A natural number will be increased by 9 times ifthe digit 0 is written between tens digit and units digit.The number is

Question 8:
Calculate: 1×2+2×3+⋯+100×101=

Question 9:
The root of the equation (x+1)+(x+2)+(x+3)+⋯+(x+100)=5750 is x=

Question 10:
The sum of digits of 31000 is A,the sum of digits of A is B,and the sum of digits of B is C.The value of C is
#Toán lớp 6
2
ZY
Zz Yuki Nora zZ
16 tháng 3 2016

2: Ước của 120 là:

{1;2;3;4;5;6;8;10;12;15;20;24;30;40;60;120}

9: x+ (1+2+3+4+...+100) = 5750

    x + 5050= 5750

     x = 5750 - 5050 = 700

6. Chữ số thứ 215 là 1285

Đúng(0)
HT
Hoàng Tử Mặt Trăng
16 tháng 2 2017

cau 2 la co 16 uoc

cau 5 a=7 b=-1 c=-2 d=-3

Đúng(0)
DK
Dragoon Knight
2 tháng 4 2015 - olm
Fill in the blank with the suitable numberQuestion 1:There are 49 students in a class. Boy students are  the number of girl students. There are  girl students in this class.Question 2:Calculate: The value of A is Question 3:Calculate: The value of A is Question 4:Jessica is 8 years old. Her grandmother is  of her age. How old is Jessica's grandmother?Answer:  years old.Question 5:If the sum of denominator and numerator of a fraction is 52 and the denominator is 18 units more than the numerator...
Đọc tiếp

Fill in the blank with the suitable number

Question 1:
There are 49 students in a class. Boy students are  the number of girl students. There are  girl students in this class.

Question 2:
Calculate: 
The value of A is 

Question 3:
Calculate: 
The value of A is 

Question 4:
Jessica is 8 years old. Her grandmother is  of her age. How old is Jessica's grandmother?
Answer:  years old.

Question 5:
If the sum of denominator and numerator of a fraction is 52 and the denominator is 18 units more than the numerator then the numerator is 

Question 6:
Find two consecutive even numbers if the first number is  of the second number.
Answer: The second number is 

Question 7:
Calculate: 
The value of A is 

Question 8:
How many natural numbers not greater than 1665 which are divisible by 5?
Answer:  numbers

Question 9:
If  then  is 

Question 10:
The sum of three consecutive even numbers is 960. The greatest numbers is 
    #Toán lớp 5
    1
    DM
    Đỗ Minh Tú
    2 tháng 4 2015

    sir, this is the place to learn math, not english offline. If you want to learn English is very wed page: ioe.vn

    Đúng(0)
    PM
    Phạm Minh Thắng
    15 tháng 3 2016 - olm
    Exam number 2Fill in the blank with the suitable numberQuestion 1Find the value of Answer: ........Question 2Fill missing number in the blank54723+........=27849+54723Question 3:Fill missing number in the blank41165+23042=23042+.........Question 4:Calculate: 4159+2615+421=.........Question 5:Find x such that x+24360=41256Answer: x=........Question 6:If the perimeter of a square is 104m then its one side’s length is : ........ mQuestion 7:If a square has one side’s length is 12cm then its...
    Đọc tiếp

    Exam number 2

    Fill in the blank with the suitable number

    Question 1
    Find the value of 
    Answer: ........

    Question 2
    Fill missing number in the blank
    54723+........=27849+54723

    Question 3:
    Fill missing number in the blank
    41165+23042=23042+.........

    Question 4:
    Calculate: 4159+2615+421=.........

    Question 5:
    Find x such that x+24360=41256
    Answer: x=........

    Question 6:
    If the perimeter of a square is 104m then its one side’s length is : ........ m

    Question 7:
    If a square has one side’s length is 12cm then its perimeter is : ........ cm

    Question 8:
    Find y such that y – 12358=18031 
    Answer: y=............

    Question 9:
    The perimeter of a rectangle is 36cm and its length is 6cm more than its width. Its area is : ........

    Question 10:
    Find the value of b such that b5 x 5 = 75
    Answer: b=.........
    #Toán lớp 4
    5
    PB
    Phạm Bùi Quang Huy
    15 tháng 3 2016

    minh ko gioi ting anh

    Đúng(0)
    HM
    Hinastune Miku
    15 tháng 3 2016

    Mình chỉ dịch ra tiếng việt thôi còn nhiêu bạn tự tính nhé.


    Điền vào chỗ trống với số thích hợp

    câu hỏi 1
    Tìm giá trị của (5673+31)x3
    Câu trả lời: ........

    Câu hỏi 2
    Điền số thích hợp vào chỗ trống
    54723 + ........ = 27.849 + 54723

    Câu hỏi 3:
    Điền số thích hợp vào chỗ trống
    41.165 + 23.042 = 23.042 + .........

    Câu hỏi 4:
    Tính: 4159 + 2615 + 421 = .........

    Câu hỏi 5:
    Tìm x sao cho x + 24.360 = 41.256
    Trả lời: x = ........

    Câu hỏi 6:
    Nếu chu vi của hình vuông là 104m thì chiều dài một bên của nó là: ........ m

    Câu hỏi 7:
    Nếu một hình vuông có chiều dài một bên là 12 cm thì chu vi của nó là: ........ cm

    Câu hỏi 8:
    Tìm y sao cho y - 12.358 = 18.031
    Trả lời: y = ............

    Câu hỏi 9:
    Chu vi của một hình chữ nhật là 36cm và chiều dài của nó là 6cm hơn chiều rộng của nó. Diện tích của nó là: ........

    Câu hỏi 10:
    Tìm giá trị của b mà
    Trả lời: b = .........

    Đúng(0)
    P
    phammiahnh
    21 tháng 2 2016 - olm
    Question 1:Calculate: 626.35+525.36 = Question 2:There are 60 seats on a train. 40% of the seats are empty. How many empty seats are there in the train?Answer: There are  empty seats.Question 3:Convert:   Question 4:The perimeter of the circle is cm(Write your answer by decimal in the simplest form)Question 5:The area of the trapezoid below is 100 m2. Find xAnswer: x = Question 6:Calculate: 23.76+18.52+16.24+41.48 = Question 7:14 hours 25 minutes – 7 hours 45 minutes =  hours 40...
    Đọc tiếp

    Question 1:
    Calculate: 626.35+525.36 = 

    Question 2:
    There are 60 seats on a train. 40% of the seats are empty. How many empty seats are there in the train?
    Answer: There are  empty seats.

    Question 3:
    Convert:   

    Question 4:

    The perimeter of the circle is cm
    (Write your answer by decimal in the simplest form)

    Question 5:
    The area of the trapezoid below is 100 m2. Find x

    Answer: x = 

    Question 6:
    Calculate: 23.76+18.52+16.24+41.48 = 

    Question 7:
    14 hours 25 minutes – 7 hours 45 minutes =  hours 40 minutes

    Question 8:

    The value of m is 

    Question 9:
    Form the smallest 5 – digit odd number using all the digits below.

    Answer: 

    Question 10:
    Find N such that 
    Answer: N = 
    #Toán lớp 6
    1
    NH
    Nguyễn Hà An
    27 tháng 2 2016

    Câu 1: 40810

    Câu 2: 24

    Câu 5: 20

    Câu 6:5036

    Câu 7:6

    Đúng(0)
    B
    bangtan
    13 tháng 12 2018
    Câu 1 :Each of cars can take 8 people. How many cars needed to take 124 people? Câu 2 : How many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits? Câu 3 : The average of five numbers is 20. The average of the five number is 18 when one of the numbers is chaned to 4. What is the orginal value of the changed number? Câu 4 :A book has 250 pages starting at number 1. How many digits are there in the page numbers of the book? Câu 5...
    Đọc tiếp

    Câu 1 :Each of cars can take 8 people. How many cars needed to take 124 people?

    Câu 2 : How many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits?

    Câu 3 : The average of five numbers is 20. The average of the five number is 18 when one of the numbers is chaned to 4. What is the orginal value of the changed number?

    Câu 4 :A book has 250 pages starting at number 1. How many digits are there in the page numbers of the book?

    Câu 5 : Find A, if A is 3 less than the average of 48; 55; 29 and A. The value of A is…

    Câu 6 : The sum of denominator and numerator of a fraction is 121 and the fraction is equal to 4/7. Find the denominator of the fraction?

    Câu 7 : The sum of two numbers is equal to 77. If the first number is multiplied by 8 and the second by 6, the two product are equal. The larger of these numbers is…

    Câu 8 : Which is the greatest 2 - digit number divisible by 2, 3 and 4?

    Câu 9 : Calculate: (1 + 2/5) x 6/7.

    Câu 10 : Give the number sequence: 1, 4, 7, 10, 13, … Find the 15th term of the number sequence.
    #Toán lớp 6
    2
    NH
    nguyễn huy hoàng
    13 tháng 12 2018

    cậu lạc đè rồi

    Đúng(0)
    P
    phamthuynhu
    27 tháng 12 2020

    câu 1:16 ; câu 2 : ai mà biết được 

    Đúng(0)
    NT
    Nguyễn Thành Luân
    27 tháng 2 2016 - olm
    Question 1:The perimeter of the circle is cm(Write your answer by decimal in the simplest form)Question 2:Calculate: 626.35+525.36 =Question 3:Calculate:(Write your answer in the simplest form)Question 4:There are 60 seats on a train. 40% of the seats are empty. How many empty seats are there in the train?Answer: There are empty seats.Question 5:A car traveled at a constant speed for 5 hours, covering a total distance of 301km. How far did the car travel for one hour?(Write your answer by...
    Đọc tiếp

    Question 1:

    The perimeter of the circle is cm
    (Write your answer by decimal in the simplest form)

    Question 2:
    Calculate: 626.35+525.36 =

    Question 3:
    Calculate:
    (Write your answer in the simplest form)

    Question 4:
    There are 60 seats on a train. 40% of the seats are empty. How many empty seats are there in the train?
    Answer: There are empty seats.

    Question 5:
    A car traveled at a constant speed for 5 hours, covering a total distance of 301km. How far did the car travel for one hour?
    (Write your answer by decimal in simplest form)
    Answer:

    Question 6:

    The value of m is

    Question 7:
    Mrs. Jane buys 10kg of flour. She uses 1/6 of it to make a cake and 1/3 of it to make grape pies. How many kilograms of flour are left?
    Answer: kg.

    Question 8:
    45% of M is 72. The value of M is

    Question 9:
    Emily rides her horse 21km in 7/6 hours. What is her average speed in kilometers per hour?

    Answer: Her average speed is kilometers per hour.

    Question 10:
    Anna multiply together the following numbers

    How many zeros are there at the end of the product?
     Answer: There are zeros.
    #Toán lớp 6
    0
    TT
    Trần Thị Anh Thư
    28 tháng 2 2018 - olm
    Câu 1 The function mm is defined on the real numbers by m(k) = \dfrac{k+2}{k+8}m(k)= k+8 k+2 ​ . What is the value of 10\times m(2)10×m(2)? Answer: Câu 2 The function ff is defined on the real numbers by f(x)= ax-3f(x)=ax−3. What is the value of a if f(3)=9f(3)=9? Answer: Câu 3 The function ff is defined on the real numbers by f(x)= 2x+a-3f(x)=2x+a−3. What is the value of a if f(-5)=11f(−5)=11? Answer: Câu 4 The function ff is defined on the real numbers by f(x) = 2 +...
    Đọc tiếp

    Câu 1 The function mm is defined on the real numbers by m(k) = \dfrac{k+2}{k+8}m(k)= k+8 k+2 ​ . What is the value of 10\times m(2)10×m(2)? Answer: Câu 2 The function ff is defined on the real numbers by f(x)= ax-3f(x)=ax−3. What is the value of a if f(3)=9f(3)=9? Answer: Câu 3 The function ff is defined on the real numbers by f(x)= 2x+a-3f(x)=2x+a−3. What is the value of a if f(-5)=11f(−5)=11? Answer: Câu 4 The function ff is defined on the real numbers by f(x) = 2 + x-x^2f(x)=2+x−x 2 . What is the value of f(-3)f(−3)? Answer: Câu 5 Given a real number aa and a function ff is defined on the real numbers by f(x)=-6\times|3x|-4f(x)=−6×∣3x∣−4. Compare: f(a)f(a) f(-a)f(−a) Câu 6 There are ordered pairs (x;y)(x;y) where xx and yy are integers such that \dfrac{5}{x}+\dfrac{y}{4}=\dfrac{1}{8} x 5 ​ + 4 y ​ = 8 1 ​ Câu 7 Given a negative number kk and a function ff is defined on the real numbers by f(x)=\dfrac{6}{13}xf(x)= 13 6 ​ x. Compare: f(k)f(k) f(-k)f(−k) Câu 8 Given a positive number kk and a function ff is defined on the real numbers by f(x)=\dfrac{-3}{4}x+4f(x)= 4 −3 ​ x+4. Compare: f(k)f(k) f(-k)f(−k). Câu 9 A=(1+2+3+\ldots+90) \times(12 \times34-6 \times 68):(\dfrac{1}{3}+\dfrac{1}{4}+\dfrac{1}{5}+\dfrac{1}{6})=A=(1+2+3+…+90)×(12×34−6×68):( 3 1 ​ + 4 1 ​ + 5 1 ​ + 6 1 ​ )= Câu 10 Given that \dfrac{2x+y+z+t}{x}=\dfrac{x+2y+z+t}{y}=\dfrac{x+y+2z+t}{z}=\dfrac{x+y+z+2t}{t} x 2x+y+z+t ​ = y x+2y+z+t ​ = z x+y+2z+t ​ = t x+y+z+2t ​ . The negative value of \dfrac{x+y}{z+t}+\dfrac{y+z}{t+x}+\dfrac{z+t}{x+y}+\dfrac{t+x}{y+z} z+t x+y ​ + t+x y+z ​ + x+y z+t ​ + y+z t+x ​ is
    #Toán lớp 7
    2
    TT
    Trần Thị Anh Thư
    28 tháng 2 2018

    nhanh đi nhé

    Đúng(0)
    NQ
    Nguyễn Qúy Cảnh
    1 tháng 11 2019

    KHO QUÁ ĐI

    Đúng(0)
    LV
    Le Viet Hoang
    20 tháng 6 2017 - olm
    Lesson 1: analyzing the polynomial factors.Notes + 2 x-1x 3 + 6x2 + 11x + 6x 4 + 2 x 2-3AB + ac + b2 + 2bc + c2A3-b3 + c3 + 3abcLesson 2: for functions: search conditions of x to A means.A shortening.Computer x to A < 1.Post 3: prove the inequality:For a + b + c = 0. Prove that: a3 + b3 + c3 = 3abc.For a, b, c are the sidelengths of the triangle. Proof that:Prove that x 5 + y5 ≥ x4y + xy4 with x, y ≠ 0 and x + y ≥ 0Lesson 4: solve the equation:x 2-3 x + 2 + | x-1 | = 0Lesson 5: find the...
    Đọc tiếp

    Lesson 1: analyzing the polynomial factors.

    Notes + 2 x-1
    x 3 + 6x2 + 11x + 6
    x 4 + 2 x 2-3
    AB + ac + b2 + 2bc + c2
    A3-b3 + c3 + 3abc
    Lesson 2: for functions: 

    search conditions of x to A means.
    A shortening.
    Computer x to A < 1.
    Post 3: prove the inequality:

    For a + b + c = 0. Prove that: a3 + b3 + c3 = 3abc.
    For a, b, c are the sidelengths of the triangle. Proof that:


    Prove that x 5 + y5 ≥ x4y + xy4 with x, y ≠ 0 and x + y ≥ 0
    Lesson 4: solve the equation:

    x 2-3 x + 2 + | x-1 | = 0


    Lesson 5: find the largest and smallest value (if any)

    A = x 2-2 x + 5
    B =-2 x 2-4 x + 1.
    C = 
    Lesson 6: calculate the value of expression.

    Know a – b = 7 feature: A = (a + 1) a2-b2 (b-1) + ab-3ab (a-b + 1)
    For three numbers a, b, c is not zero catches up deals for equality: 
    Computer: P = 

    Article 7: proof that

    8351634 + 8241142 divisible 26.
    A = n3 + 6n2-19n-24 divisible by 6.
    B = (10n-9n-1) divisible 27 with n in N *.
    Article 8:

    In the motorcycle race three cars depart at once. The second car in a one-hour run slower than the first car 15 km and 3 km third cars. rapidly should the destination more slowly the first car 12 minutes and the third car earlier today. No stops along the way. Calculate the speed of each car, race distance and the time each car
    #Toán lớp 8
    0
    Bảng xếp hạng
    Tất cả Toán Vật lý Hóa học Sinh học Ngữ văn Tiếng anh Lịch sử Địa lý Tin học Công nghệ Giáo dục công dân Âm nhạc Mỹ thuật Tiếng anh thí điểm Lịch sử và Địa lý Thể dục Khoa học Tự nhiên và xã hội Đạo đức Thủ công Quốc phòng an ninh Tiếng việt Khoa học tự nhiên
    • Tuần
    • Tháng
    • Năm
    Các khóa học có thể bạn quan tâm
    Tổng thanh toán: 0đ (Tiết kiệm: 0đ)
    Tới giỏ hàng
    Yêu cầu VIP