Grade 6 Math Olympiad 2020-2021

What is the process to find the last angle in a triangle when given the first five angles?

• Add the first five angles and divide by 5.

• Subtract the sum of the known angles from 180°.

• Multiply the first five angles together.

• Use the Pythagorean theorem to find the last angle.

What does it mean for digits to be 'repeated' in a number?

• Repeated digits mean that the same digit appears more than once.

• Repeated digits are digits that are next to each other in a number.

• Repeated digits are digits that are in ascending order.

• Repeated digits are digits that are only even numbers.

What is the significance of counting corners in a geometric shape?

• It helps determine the number of edges in the shape.

• It helps determine the number of vertices, which is important for calculating properties of the shape.

• It is used to measure the area of the shape.

• It indicates the color of the shape.

How many sides does a hexagon have?

• 4

• 5

• 6

• 7

How many sides does a square have?

• 3 sides

• 4 sides

• 5 sides

• 6 sides

How do you calculate the total number of sides from multiple shapes?

• Add the number of sides of each shape together.

• Multiply the number of each shape by its number of sides and then sum all the results.

• Count the sides of each shape individually and list them.

• Divide the total number of shapes by the average number of sides.

What is a two-digit number?

• A number between 1 and 9

• A number from 10 to 99

• A number greater than 99

• A number that has three digits

What is the relationship between the angles in a triangle and the number of sides?

• The number of angles in a triangle is equal to the number of sides, which is always 3.

• A triangle has two angles and three sides.

• The number of angles in a triangle is always greater than the number of sides.

• A triangle has four angles and three sides.

What is a mathematical riddle and how can it be solved?

• A mathematical riddle is a problem that requires logical reasoning and mathematical knowledge to solve.

• A mathematical riddle is a simple arithmetic problem that can be solved with basic calculations.

• A mathematical riddle is a type of puzzle that has no solution and is meant to confuse the solver.

• A mathematical riddle is a question that can be answered with a single word or number.

What is the sum of the angles in a triangle?

• 90°

• 180°

• 360°

• 270°