SETS
What is a set?
A collection of distinct objects, considered as an object in its own right.
What type of numbers start at 0?
Whole numbers.
Which 3D shape has six congruent square faces?
A cube.
What is the basic unit of length in the metric system?
Meter (m).
Spell the words for the number 4,500 in words.
Four thousand five hundred.
What is the symbol used to represent the empty set?
The empty set is represented by the symbol {} or ∅.
What are prime numbers?
Prime numbers are natural numbers greater than 1 that have no positive divisors other than 1 and themselves.
Name a 3D shape that has a circular base and one vertex.
A cone.
How many millimeters are in a centimeter?
10 millimeters.
What is the standard form of the number three million, two hundred thousand?
N.B. (Say what the numbers are)
3,200,000.
What are the elements of a set of even numbers less than 10?
Answer: {2, 4, 6, 8}.
Give examples of four even numbers that are less than 200 but greater than 100.
102, 104, 112, 124, 188...
How many edges does a rectangular prism have?
12 edges.
What metric unit would you use to measure the mass of a book?
Grams (g).
How do you write the number 1,234,567 in expanded form?
1,000,000 + 200,000 + 30,000 + 4,000 + 500 + 60 + 7.
What is the union of the sets {1, 2, 3} and {3, 4, 5}?
Answer: {1, 2, 3, 4, 5}.
What are odd numbers? Give two examples of odd numbers.
Numbers that cannot be divided evenly by 2. They end with 1,3,5,7 or 9. Example: 3, 37, 55, 69...
What is the name given to the point at which all the triangular faces on a pyramid meet?
The Apex.
How do you convert kilometers to meters?
Multiply by 1,000.
What is the value of the digit 5 in the number 5,678,912?
5,000,000.
Define the intersection of two sets.
The intersection of two sets is the set of elements that are common to both sets.
What are composite numbers?
Composite numbers are numbers that have 2 or more factors.
Which type of 3D shape is described below?
A 3D shape with 2 parallel circular bases connected by a single curved surface.
A cylinder.
What is the metric unit for measuring liquid volume?
Liter (L).
How would you read the number 9,876,543?
Nine million, eight hundred seventy-six thousand, five hundred forty-three.