Speaker: Where a digit sits within a number tells you its value. Its place value. If it's a unit, a ten or a hundred, the position gives the digit a different value. This flat is for sale for £147,999 ...

I learned the following trick for memorizing the value of e from my colleague, Gene White. It never fails to impress calculus students (given a wide enough definition of “impress”). I learned the ...

If you're using Excel to calculate monetary values, then you only have to worry about two decimal places in your numbers. Aligning your numbers to the right automatically lines up the decimal points ...