Math grade 1
Adding and subtracting, tens and ones, telling time, categories, nouns, verb tense, time order, and more.
Math grade 2
Placevalue models, contractions, irregular plurals, plants and animals, historical figures, and more.
Math grade 3
Multiplying and dividing, bar graphs, pronouns, possessives, weather and climate, geography, and more.
Top Questions
Phuonganh_309
23/05 at 09:05Phuonganh_309
23/05 at 08:58Lâm Phan Bình Nguyên
04/08/2017 at 20:35
There is 3 activities in the competition is: +3 marks, 2 marks and 1 marks.
So there must be: \(\left(10.3\right).4=120\left(students\right)\)taken the test to satisfy the question.
Shreya Parekh
08/05/2020 at 19:20VN StarKing
01/05/2020 at 10:29Exam number 1: Choose 2 consecutive cells which have the same or equal value. (Tìm cặp bằng nhau)
Exam number 2: Vượt chướng ngại vật
Question 2.1:
The missing number is ...........
a. 5.9 b. 8.3 c. 6.3 d. 3.8
Question 2.2: Find the value of y such that 19.5 + y = 32.6
a. 52.1 b. 14.1 c. 51.1 d. 13.1
Question 2.3: Count back by 0.5
2.7  P 
The value of P is ..........
a. 3.7 b. 1.2 c. 1.7 d. 4.2
Question 2.4: Count back by 0.1
Q  0.9 
The value of Q is ...........
a. 0.6 b. 1.1 c. 1.0 b. 0.7
Question 2.5: Calculate: 1.34 + 2.34 + 3.34 + ...... + 20.34 = .........
a. 205.96 b. 195.12 c. 227.64 d. 216.8
Question 2.6:
Rule: Add 13.85. The missing number is ..............
a. 54.44 b. 53.44 c. 80.14 d. 81.14
Question 2.7:
Rule: Substract 15.24. The missing number is ...........
a. 49.42 b. 19.84 c. 48.52 d. 18.94
Question 2.8: Which of following decimals is equal to 3/8?
a. 0.35 b. 0.375 c. 0.3 d. 0.357
Question 2.9: Write these numbers in standard form: 21.3 = 20 + 1 + 0.3
Which of following is true?
a. 149.34 = 100 + 40 + 9 + 0.34
b. 127.06 = 120 + 7 + 0.06
c. 105.9 = 100 + 5 + 0.9
d. 280.2 = 200 + 8 + 0.2
Question 2.10: Count on by 0.3
The value of N is ............
a. 4.1 b. 3.5 c. 3.8 d. 4.4
Question 2.11: 10 + ..... + 8 = 18.06
The missing number is .............
a. 0.06 b. 0.8 c. 0.08 d. 0.6
Question 2.12: Find the value of a if
a. 9 b. 1 c. 8 d. 7
Exam number 3: Fill in the blank with the suitable number (Note: write decimal number with "the dot" between number part and fraction part. Example: 0.5)
Question 3.1: If n = 23.54 then n x 9 = ...............
Write your answer by decimal in the simplest form
Question 3.2: If a x b = 42.63 then b x a = ..........
Question 3.3:
The missing decimal number is ...........
Question 3.4: Multiply: 3.56 x 8 = .......... Write your answer by decimal in the simplest form.
Question 3.5: This table shows the weights of Peter's three dogs.
The product of the combined weight of Shadow and Josie and the weight of Brody is ............. kg.
Question 3.6: If a = 2.4; b = 5.6 and c = 7.6 then (a + b) x c = ......... Write your answer by decimal in the simplest form.
Question 3.7: The cost of 2 kilograms of oranges is 2.31 dollars. What is the cost of 12 kilograms of oranges?
Question 3.8: Calculate: 0.4 x 8.4 x 2.5 = ............
Fill in the blank with the suitable sign (>, =, <)
Question 3.9: Compare: M = 25.36 x 25.34 and P = 25.35 x 25.35
Question 3.10: Compare: A = 26.26 x 4949.49 and B = 49.49 x 2626.26
Đáp án đề thi Violympic Toán Tiếng Anh lớp 5 vòng 6
Exam number 1: Choose 2 consecutive cells which have the same or equal value. (Tìm cặp bằng nhau)
(1) = (5); (2) = (4); (3) = (19); (6) = (10); (7) = (8); (9) = (20); (11) = (12); (13) = (15); (14) = (18); (16) = (17)
Exam number 2: Vượt chướng ngại vật
Question 2.1: b Question 2.2: d Question 2.3: b Question 2.4: b
Question 2.5: d Question 2.6: b Question 2.7: a Question 2.8: b
Question 2.9: c Question 2.10: c Question 2.11: a Question 2.12: c
Exam number 3: Fill in the blank with the suitable number
Question 3.1: 211.86 Question 3.2: 42.63 Question 3.3: 9.2
Question 3.4: 28.48 Question 3.5: 44.7 Question 3.6: 60.8
Question 3.7: 13.86 Question 3.8: 8.4 Question 3.9: < Question 3.10: =
Đề thi Violympic Toán Tiếng Anh lớp 5 vòng 5 năm 2015  2016
Exam number 1: Choose the increasing value. (Chọn các giá trị theo thứ tự tăng dần)
Exam number 2:
Question 1: Convert 25m = ........... km.
a. 250 b. 0,025 c. 2,5 d. 0,25
Question 2: 2m^{2} = .............. dm^{2}. The missing number is ............
a. 200 b. 200000 c. 2000 d. 20000
Question 3: Convert 3,25kg = ........... g.
a. 0,325 b. 325 c. 3250 d. 32,5
Question 4: Convert 340kg = .......... ton.
a. 34 b. 3,4 c. 0,34 d. 0,034
Question 5: Convert 5.03m = ............cm.
a. 50,3 b. 0,503 c. 503 d. 5030
Question 6: How many natural numbers are there less than 7,23?
a. 8 b. 7 c. 5 d. 6
Question 7: How many odd numbers are there less than 54,91?
a. 55 b. 27 c. 26 d. 28
Question 8: How many even numbers are there less than 46,25?
a. 25 b. 47 c. 24 d. 23
Exam number 3: Fill in the blank with the suitable number.
Question 1: Convert 1m = ..........cm.
Question 2: Convert 1mm = ............ m
Question 3: If x is a natural number and 3,8 < x < 4,3 then x = ..............
Question 4: In the following numbers, which is the greatest?
7,568; 9,265; 8,975; 7,689; 9,256
Question 5: In the following numbers, which is the smallest?
4,92; 5,84; 4,85; 8,54; 4,58; 5,48
Question 6: Convert: 5km 2m = ............. km.
Question 7: If m is a even number and 81,32 > m > 78,54 then m = .......
Question 8: Use all the digits below to form the decimal number that is smaller than 5.
2; 5; 9; 4; 8. How many such numbers are there?
Question 9: Fill in the blank with the suitable sign (>, <, =)
Compare: 76,5 ......... 75,66
Question 10: Compare: 31,040 ........... 31,04
VN StarKing
01/05/2020 at 10:25Đỗ Thanh Ngân
10/04/2020 at 07:08Trần Đại Nghĩa
09/04/2020 at 04:32nguyễn quang nam
03/04/2020 at 09:51
Dương Ngọc Thiện 08/04/2020 at 14:17
ồ, rảnh quá nha bạn
_parkyoona_
01/04/2020 at 14:57Nguyễn Viết Trung Nhân
24/03/2020 at 11:16
Nguyễn Viết Trung Nhân 24/03/2020 at 11:22
Also know that he always spend 1 GO per month.
Nguyễn Viết Trung Nhân
24/03/2020 at 10:23Let # a symbol of changing an number to a word have meaning. Here's how this symbol works:
Number  1  2  3  4  5  6  7  8  9 
Letter that # can change to  a  d  g  j  m  p  s  v  y 
Letter that # can change to  b  e  h  k  n  q  t  w  z 
Letter that # can change to  c  f  i  l  o  r  u  x 
Ex: 4582 # Love
What can these equations can change to?
[(19) x (20)]^2 x \(\sqrt{9}\) x 5 + 22097157 # ?
y # ?, know that: \(\dfrac{\sqrt{y\sqrt{3}}\times y^2}{\sqrt{2}\times y}=\dfrac{\sqrt[4]{12\times y^2}\times y^2}{311030758}\)
If it is too hard, tell me.

Nguyễn Viết Trung Nhân 24/03/2020 at 10:58
Sorry, I change the findingy part to:
y # ?, know that: \(\dfrac{\sqrt{\left(20000000044424621\right)\sqrt{3}}\times y^2}{\sqrt{2}\times y}=\dfrac{\sqrt[4]{12\times y^2}\times y}{2}\)
# only works with positive numbers
(This is an exercise I thought by myself, so I hope you will understand my mistakes.)
Nguyễn Lam My
21/03/2020 at 08:31Nguyễn Viết Trung Nhân
20/03/2020 at 11:53
Nguyễn Viết Trung Nhân 20/03/2020 at 11:55
Sorry, I change the phrase "born to the South" to "born Nam"