1 is me (one). When multiplying by 10's the decimal place is moved the number of 0's RIGHT. When dividing by 10's the decimal place is moved the number of 0's LEFT. (1=1.0) The following formula taught me to dance (do the brackets first.) ((1×10)÷(1÷10))=(10÷0.1)=100÷1=100? I'd practice sitting.