2019 Grade 5 Math Challenge Elimination Level Questions with Answers – Part 2

This is the 2019 Grade 5 Math Challenge Elimination Level Questions with Answers – Part 1 with answers. Questions in the previous years can be accessed on the Past Tests page and all questions can be found in the All Posts page.

26.) How many whole numbers n will make \dfrac{200}{n} a whole number?

27.) In a set \{\dfrac{3}{9}, \dfrac{3}{6}, 33\dfrac{1}{3}, \dfrac{4}{12}, \dfrac{5}{25}, \dfrac{5}{15}, \dfrac{123}{369}, \dfrac{17}{51}, \dfrac{19}{38}, 0.333333 ...\} how many of the numbers are equal to 33\dfrac{1}{3}% ?

28.) One-digit whole numbers x and y have exactly four factors each. Also, x + y has exactly four factors. What is the value of x + y?

29.) What is the value of n in the equation (\dfrac{1}{2})^2 \times (\dfrac{2}{3})^2 \times (\dfrac{3}{4})^2 \times ... \times (\dfrac{9}{10})^2 = n?

30.) What is thrice the value of \dfrac{1 + 2 + 3 + 4 + 5 + 6}{18 + 15 + 12 + 9 + 6 + 4}?

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2019 Grade 5 Math Challenge Elimination Level Questions with Answers – Part 1

This is the 2019 Grade 5 Math Challenge Elimination Level Questions with Answers – Part 1 with answers. Questions in the previous years can be accessed on the Past Tests page and all questions can be found in the All Posts page.

1.) What is the missing added in the statement below?
20 + 22 + 24 + 26 + 28 = 21 + 23 + ___ + 25 + 27

2.) What is the average of 17, 20, 23, 26, 29, 32 and 35?

3.) If a + b = 78, b + c = 121, and a + c = 125, what is a + b + c equal to?

4.) What is the value of the expression
\dfrac{1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10}{40 + 36 + 32 + 28 + 24 + 20 + 16 + 12 + 8 + 4}

5.) Two sides of a triangle have lengths 30.45 cm and 39.27 cm. If the perimeter of the triangle is 120 cm, how long is the third side?

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2004 Grade 4 Math Challenge Division Level Questions with Answers

This is the 2004 Grade 4 Math Challenge Division Level Questions with Answers. Questions in the previous years can be accessed on the Past Tests page and all questions can be found in the All Posts page.

Easy

1.) What is the product of 48 and 1000?

2.) Joe has 19 stamps. Rico has twice as many. How many stamps do they have together?

3.) Ann has P450. Lily has P45. How many times as much money has Ann than Lily?

4.) What are the prime numbers between 80 and 90?

5.) A garden is 28m long and 15m wide. What is its perimeter?

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2004 Grade 8 Math Challenge Elimination Level Questions – Part 2

This is the 2004 Grade 8 Math Challenge Elimination Level Questions – Part 2. Solutions will be posted later. Questions in the previous years can be accessed on the Past Tests page and all questions can be found in the All Posts page.

26.) If n is an integer, find the solution set of -5 < 2n - 1 < 5.

27.) For what value of n will \dfrac{5n + 2}{7n + 1} reduce to \dfrac{3}{4}?

28.) Solve for x: 3x^2 + 13x - 10 = 0

29.) Find the positive root of 2x^2 - 5x - 8 = 0.

30.) Find an equation with an integral coefficients such that the roots are \dfrac{3}{2} and \dfrac{2}{5}.

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2004 Grade 8 Math Challenge Elimination Level Questions – Part 1

This is the 2004 Grade 8 Math Challenge Elimination Level Questions – Part 1. Solutions will be posted later. Questions in the previous years can be accessed on the Past Tests page and all questions can be found in the All Posts page.

1.) If x > 5, which is the largest?
a.) \dfrac{5}{x}
b.) \dfrac{5}{x - 1}
c.) \dfrac{x}{5}

2.) Simplify: 9x - (2y - 3x) - \{y - (2y - x)\} - \{2y + (4x - 3y)\}

3.) Perform the indicated operations:
\dfrac{3x - 2y}{5x - 3} + \dfrac{2x - y}{3 - 5x}

4.) Expand: (2x - 3y)^2

5.) The coordinate of A is -7 and that of B is 21. If M is the midpoint of AB, how long is AM?

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