tatane90 wrote:
What is the hundreths digit of the decimal m ?
(1) The tenths digit of 100m is 5.
if we take m = 0.005, thus the tenths digit of 100m is 5
and the hundreths digit of the decimal m is 0
Why is it not sufficient ?
How do you know that the tenths digit must be equal to the hundreths digit ?
Once you are past zero it goes tenths, hundredths, thousandths
So in the number 0.05 the number 5 is in the hundredths position. In 0.5 the number 5 is in the tenths position.
Taking this knowledge if something is in the hundredths position (meaning in the 0.0X location) and you multiply it by 1,000 you are shifting the decimal place three spaces to the right.
We started out at 000.0x and we end up shifting it to 0X0.00.
So by multiplying the hundredths position by 1,000 the digit shifts its location to the tens position.
Does this make sense or did I butcher that explanation?