Logic (Math) Flashcards
What is PEMDAS?
PEMDAS is the Order of Operations
Parenthesis Exponents Multiplication Division Addition Subtraction
What are Counting / Natural numbers?
These are the numbers we use when counting:
{1, 2, 3, 4, 5, …}
What are the Whole numbers?
Including 0 with the set of counting numbers forms the set of whole numbers:
{0, 1, 2, 3, 4, 5, …}
What are the numbers being added called?
the addends
In subtraction the ____ is taken from the minuend. The result is called the _____.
In subtraction the subtrahend is taken from the minuend. The result is called the difference.
Numbers that are multiplied are called _____. The result of their multiplication is the _____.
Numbers that are multiplied are called factors. The result of their multiplication is the product.
In the problems:
2 + 3 = 5 & 5 - 2 = 3
the numbers 2, 3 and 5 form an addition and subtraction ___ _____.
In the problems:
2 + 3 = 5 & 5 - 2 = 3
the numbers 2, 3 and 5 form an addition and subtraction fact family.
Changing the order of addends in an addition problem does not change the sum. This is known as the ____ _____ __ ______.
Changing the order of addends does not change the sum. This is known as the commutative property of addition.
The ______ _____ __ ______ states that when zero is added to a given number, the sum is equal to the given number.
The identity property of addition states that when zero is added to a given number, the sum is equal to the given number.
Changing the order of the factors in a multiplication problem does not change the product. This is known as the _______ _____ ___ ________.
Changing the order of the factors in a multiplication problem does not change the product. This is known as the commutative property of multiplication.
The ______ _____ of _________ states that when a given number is multiplied by 1, the result equals the given number.
The identity property of multiplication states that when a given number is multiplied by 1, the result equals the given number.
The ________ ________ of ________ states that the grouping of addends does not change the sum in an addition problem.
The associative property of addition states that the grouping of addends does not change the sum in an addition problem.
(a + b) + c = a + (b + c)
The ________ ________ of ________ states that the grouping of factors does not change the products in a multiplication problem.
The associative property of multiplication states that the grouping of factors does not change the product in a multiplication problem.
(a * b) c = a (b * c)
What is an equation?
An equation is a statement that two quantities are equal.
3 + 4 = 5 + 2
or
5 + 6 = 9 + a
What is the zero point on a number line called?
The zero point on a number line is called the origin.
In our number system the value of a digit depends upon its position within a multi-digit number. The value of each position is its _____ ______.
In our number system the value of a digit depends upon its position within a multi-digit number. The value of each position is its place value.
An angle formed by perpendicular rays is _____ _____
An angle formed by perpendicular rays is a right angle and it is commonly marked with a small square at the vertex.
What is a vertex?
A vertex is where two rays share a common end point.
What are angles larger in degrees than a 90 degree angle called?
Angles larger in degrees than a 90 degree angle are called obtuse angles.
What are angles smaller in degrees than a 90 degree angle called?
Angles smaller in degrees than a 90 degree angle are called acute angles.
