Introduction to Variables: x 0 = 0
Letters are used in algebraic equations to represent numbers we do not know the value of yet. These are called variables.
Subject: zero
Multiplying Whole Numbers, Part 1: Multiplication By Zero
This clip explains that the product of any number multiplied by zero is zero.
Subject: zero
Multiplying Whole Numbers, Part 3: Multiplying by a Number With a Zero in the Middle
This clip explains that there's more than one way to multiply numbers with a zero in the middle. It suggests that for those just learning
Subject: zero
Multiplying Whole Numbers, Part 3: Multiplying by Ten, Twenty, Thirty and Beyond
This clip explains the role that zeroes play in multiplying numbers by 10, 20, 30 and so on.
Subject: zero
Multiplying Whole Numbers, Part 3: Multiplying by Hundreds, Thousands and Ten Thousands
This clip explains that "
if we multiply a number by 100
we write two zeroes after that number," then goes on to explain the procedure of adding the
Subject: zero
Understanding Decimal Fractions: Summary: Understanding Decimal Fractions
decimals as fractions, as well as expressing fractions as decimals (with denominators of some power of ten), and finally putting zeros to the right of a
Subject: zero
Understanding Decimal Fractions: Zeros to the Right of the Decimal
This clip explains that adding extra zeros following a number or numbers to the right of a decimal point does not change the value of the decimal.
Subject: zero
Signed Numbers: Introducing Negative Numbers
located to the left of the zero, rather than to the right.
Subject: zero
Signed Numbers: Positive Numbers
number line, the positive numbers are lined up in order to the right of the zero, in what is called "the positive direction." The negative numbers are
Subject: zero
Signed Numbers: Number Line Exercises
zero, but don't include any fractions, positive or negative.
Subject: zero