2nd Vietnamese Secondary Mathematics Contest

 
The Parent Connection for Singapore Math: Tools to Help Them Get It & Get Behind It 

Earlybird Kindergarten Mathematics Textbook A (Standards Edition) 

Earlybird Kindergarten Mathematics Textbook B (Standards Edition) 


A1. Solve the equation:


A2. The points X, Y and Z are chosen on the side BC, CA, AB of a given triangle ABC, respectively such that BX = CY = AZ. Prove that the triangle

1st Vietnamese Secondary Mathematics Contest

Math Contests: High School, Vol. 4- School Years: 1996-97 through 2000-2001


Math Olympiad Contest Problems for Elementary and Middle Schools, Vol. 1


Math Contests, Grades 7 & 8, Vol. 1- School Years: 1977-78 Through 1981-82


Competition Math for Middle School






A1. Find all pair of natural numbers  x, y such that: (2x + 1)(2x + 2)(2x + 3)(2x + 4) - 5y = 11879(For 6th grade)
A2. Let n be

How Do I Beat the Math Puzzle in Tombscape?

How Do I Beat the Math Puzzle in Tombscape? You will not need a calculator to beat the math puzzle in "Tombscape."In "Tombscape," a point-and-click flash adventure game, you travel through a treacherous tomb and collect treasure while fending off deadly spiders and avoiding traps. "Tombscape" includes several puzzles that must be solved before you can progress to the next adventure. About a

How to Draw a Crossword Puzzle?

Get a thrill from drawing a crossword puzzle---or go crazy trying to do it.
Addiction comes in many forms: alcohol, drugs, crossword puzzles. You know you are addicted when the first thing you do every morning is pull out your paper and begin working on the crossword puzzle. However, unlike alcohol and drugs, word puzzles are healthy addictions that strengthen your mind. According to Discovery

Math Puzzles and Games

Free online math games for math lovers: mathematical puzzles, prime numbers, cross sums, memes, Sudoku, Kakoru, logic puzzles, brainteasers and more. Good for students trying to improve their math skills.Math Games from About Mathematics Interactive math games, math brain teasers and math puzzles from your Mathematics Guide at About.The Strange Case of 142,857142,857 is just a number but it

Play Free Sudoku Online

Try to beat the clock with these free Sudoku puzzles of varying difficulty, from easy to extra-challenging. Play these Sudoku online or print and solve on paper.
Free Sudoku Puzzles to PrintAddicted to Sudoku puzzles? About Puzzles has hundreds of free Sudoku Puzzles for every range of expertise. These Sudoku puzzles range in difficulty from extra easy to extra challenging. No need to be a

Teaching Math to the Talented

Which countries—and states—are producing high-achieving students?By Eric Hanushek, Paul E. Peterson and Ludger Woessmann
In Vancouver last winter, the United States proved its competitive spirit by winning more medals—gold, silver, and bronze—at the Winter Olympic Games than any other country, although the German member of our research team insists on pointing out that Canada and Germany both

Everyday math Long division

When starting division, you may be given simple division problems that you can do in your head, using mental math. Those problems would look like this:You would think to yourself, what number times 9 gives me 27? And your answer would be 3. However, eventually you will encounter bigger division problems that you cannot do using mental math. In

Long division with decimals in divisor

Another type of division you’ll encounter is division with decimals in both the divisor and the dividend. It might look something like this:
In this situation, you move the decimal place the number of spaces in the divisor until the decimal is at the end of the number; you move the decimal the same number of spaces in the dividend: this does

Multiplication using vedic mathematics

We will illustrate this by doing 32 × 31. Lines are used to represent the numbers. 32 is represented by 3 red lines for the tens and 2 red lines for the units. Similarly, 31 has 3 lines for its tens and 1 line for units, this time the lines are blue.
Wherever the lines cross a dot is drawn and then the diagram is split into three parts as shown by the dashed lines. The number of dots in each

Long division e.g - Fun with 2-digit divisors - How to Divide Double Digits

How to Divide Double Digits

Dividing double digits is very similar to long division with a single-digit divisor, but it does require some extra multiplication and thinking.

Example: 236 & divide; 28 becomes
 Guess how many times the divisor (the 28, in our example) can go into the dividend (the 236, in our example), then write down that number.
3Multiply your guess and the divisor (

How to do double digit long division?

How to divide a four digit number by a two digit number (e.g. 4138 ÷ 17): Place the divisor before the division bracket and place the dividend (4138) under it.

       
17)4138

Examine the first digit of the dividend(4). It is smaller than 17 so can't be divided by 17 to produce a whole number. Next take the first two digits of the dividend (41) and determine how many 17's it contains. In

How to do polynomial long division step by step?

In algebra, polynomial long division is an algorithm for dividing a polynomial by another polynomial of the same or lower degree, a generalised version of the familiar arithmetic technique called long division. It can be done easily by hand, because it separates an otherwise complex division problem into smaller ones.

FindThe problem is written like this:The quotient and remainder can then be

How to do double digit long division step by step?

How to do double digit long division step by step?

More books about long division for kids



How to do Long Division with Remainders?
When we are given a long division to do it will not always work out to a whole number. Sometimes there will be numbers left over. These are known as remainders. Taking an example similar to that on the Long Division page it becomes more

How to do long multiplication with decimals?

Decimal values are used to symbolize fraction numbers. In the multiplication with decimals are writing exclusive of a fraction having denominator and denominator. Decimal values are might be greater than 1 or less than 1. For the model, the fraction 4/10 might be written as the decimal value as 0.4 and marked as four tenths or zero point four. The decimal of 45/10 is 4.5 which can be marked

How to do long multiplication step by step?

Long multiplication extends tables work so that numbers bigger than 10 can be multiplied without using a calculator. There are a number of ways to do this.
The traditional method is demonstrated in the example below. This method is very versatile and can handle decimals as well as whole numbers. In the box on the right you can enter your own multiplications. Watch as the solution unfolds