The End Digits
What are the last two digits of a huge number?
Author Archive for: corrill
Entries by InterMath
What Number Is It?
Determine a number given its particular properties.
Coefficients that Affect the Graph
Observe changes in functions as you modify their coefficients.
Difference of Squares
Write a given number as the difference of two squares.
Ending a Perfect Square
Find a special number that can make other numbers into perfect squares.
Who Wants to Win One Million?
Find particular factors that produce 1,000,000.
Fortune Telling
Using only a digit and the four basic operations (+, -, x, /), produce a set of numbers.
Inside a Domain
Find all the whole numbers that can replace the variable x in a given expression so that the expression has a particular value.
100 Sums
Do any numbers from a given set have a sum of 100?
How Many Thousands?
Find possible values of a digit in an eight-digit number when you know one of its divisors.