Why Study Math?

Why Study Math?Math is often referred to as a universal language. Discover reasons for studying math with tips from a mathematics tutor in this free video on math lessons.Expert: Fernando MillanFilmmaker: Paul Mul...

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Why Study Math?

Why Study Math?Math is often referred to as a universal language. Discover reasons for studying math with tips from a mathematics tutor in this free video on math lessons.Expert: Fernando MillanFilmmaker: Paul Muller ...

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Mathematic Skills for Grades 3-6

NUMBER OPERATIONS AND CONCEPTSA+ Math  Play exciting games like Matho and Hidden Picture (+ -x /)  Also has great flashcardsBuilder Ted In this interactive game, students must order decimalsComparing Big Numbers Comparing fractions and decimals - Practice converting one to the other in this interactive game.Concentration Games from Harcourt Brace: Fractions/Decimal Equivalents, Fractions/Decimal Equivalents...

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Mathematic Skills for Grades 3-6

NUMBER OPERATIONS AND CONCEPTS A+ Math  Play exciting games like Matho and Hidden Picture (+ -x /)  Also has great flashcards Builder Ted In this interactive game, students must order decimals Comparing Big Numbers Comparing fractions and decimals - Practice converting one to the other in this interactive game. Concentration Games from Harcourt Brace: Fractions/Decimal Equivalents, Fractions/Decimal Equivalents...

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Double Division with 3 Digit Divisors 612416/983

Double Division with 3 Digit Divisors 612416/983Method of Vietnamese Diagram: Double the Divisor 3 TimesMethod of International Diagram: Double the Divisor 3 TimesMethod of Vietnamese Diagram:  Double the Divisor 5 TimesIt's Easy!Step 1 - Double, double, double.Step 2 - Subtract off multiples.Step 3 - Add up your answer." ...

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Double Division with 3 Digit Divisors 612416/983

Method of Vietnamese Diagram: Double the Divisor 3 Times Method of International Diagram: Double the Divisor 3 Times Method of Vietnamese Diagram:  Double the Divisor 5 Times It's Easy!Step 1 - Double, double, double.Step 2 - Subtract off multiples.Step 3 - Add up your answer." Photos source: Nguyen Thi Lan Phuong, ...

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9th Vietnam Mathematical Olympiad 1970 Problems

9th Vietnam Mathematical Olympiad 1970 ProblemsA1.  ABC is a triangle. Show that sin A/2 sin B/2 sin C/2 < 1/4.  A2.  Find all positive integers which divide 1890·1930·1970 and are not divisible by 45.A3.  The function f(x, y) is defined for all real numbers x, y. It satisfies f(x,0) = ax (where a is a non-zero constant) and if (c, d) and (h, k) are distinct points such that...

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9th Vietnam Mathematical Olympiad 1970

A1.  ABC is a triangle. Show that sin A/2 sin B/2 sin C/2 < 1/4.  A2.  Find all positive integers which divide 1890·1930·1970 and are not divisible by 45. A3.  The function f(x, y) is defined for all real numbers x, y. It satisfies f(x,0) = ax (where a is a non-zero constant) and if (c, d) and (h, k) are distinct points such that f(c, d) = f(h, k), then f(x, y)...

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8th Vietnam Mathematical Olympiad 1969 Problems

8th Vietnam Mathematical Olympiad 1969 Problems1.  A graph G has n + k points. A is a subset of n points and B is the subset of the other k points. Each point of A is joined to at least k - m points of B where nm < k. Show that there is a point in B which is joined every point in A. 2.  Find all real x such that 0 < x < π and 8/(3 sin x - sin 3x) + 3 sin2x ≤ 5.   3. ...

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8th Vietnam Mathematical Olympiad 1969

1.  A graph G has n + k points. A is a subset of n points and B is the subset of the other k points. Each point of A is joined to at least k - m points of B where nm < k. Show that there is a point in B which is joined every point in A. 2.  Find all real x such that 0 < x < π and 8/(3 sin x - sin 3x) + 3 sin2x ≤ 5.  3.  The real numbers x1, x4, y1, y2 are...

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Find the value of 'x' in the expression

If  a = xy / (x + y) and b = yz / (y + z) and c = zx / (z + x).Know that a, b and c are not equal to zero, find the value of x in terms of a, b and c. Fun math books for kids (read aloud to ages 9 and ...

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Find the value of 'x' in the expression

If  a = xy / (x + y) and b = yz / (y + z) and c = zx / (z + x). Know that a, b and c are not equal to zero, find the value of x in terms of a, b and c....

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Adding Fractions with Different Denominators

Adding Fractions with Different Denominators How to Add Fractions with different denominators:Find the Least Common Denominator (LCD) of the fractionsRename the fractions to have the LCDAdd the numerators of the fractionsSimplify the FractionAdding Fractions with Unlike Denominators Adding Fractions with Different Denominators (No LCD)...

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