Teacher Robyn stands in a studio next to a large touchscreen. She has long blond hair and wears glasses and a blue shirt with a print that reads "Homework zone."

A chart appears on the large touchscreen. The columns read "Hundreds, tens, ones, decimal, tenths, hundredths, thousandths."

A caption reads "Teacher Robyn."

Robyn says HI, TVOKIDS.
I'M TEACHER ROBYN.
I'M GOING TO SHOW YOU
A REALLY GREAT TRICK
FOR MULTIPLYING
NUMBERS WITH A DECIMAL
BY POWERS OF TEN.
IN THIS CASE, I'LL SHOW YOU
TEN AND ONE-HUNDRED,
BUT YOU COULD REALLY KEEP
USING IT ALL THE WAY UP.
THE SAMPLE NUMBER WE'LL
CHOOSE IS THREE POINT SIX.
THREE DECIMAL SIX.
OR, THREE AND
SIX TENTHS.

She writes 3 in the ones column, a point in the decimal column and 6 in the tenths column.

She says IF I WAS GOING TO MULTIPLY
THIS NUMBER BY TEN,
ALL I NEED TO DO IS
MOVE THE DECIMAL PLACE
ONE WAY TO THE RIGHT.

She moves the dot and continues SO THAT NUMBER GETS A
LITTLE BIT BIGGER.
IF I WAS TO PLUG
THAT ANSWER
INTO A PLACE
VALUE CHART,
THAT MEANS THE THREE
WOULD BE IN THE TENS,
THE SIX WOULD BE
IN THE ONES.
AND THEN WE WOULD
HAVE DECIMAL ZERO.
OR THREE POINT SIX TIMES
TEN IS THIRTY-SIX.
IF I WAS MULTIPLYING
BY ONE-HUNDRED,
I WOULD MOVE IT TWO
PLACES TO THE RIGHT.
IF I HAD THREE DECIMAL
SIX TIMES ONE-HUNDRED,
I SEE THAT ONE-HUNDRED
HAS TWO ZEROS;
THAT MEANS IT'S GOING
TWO PLACES TO THE RIGHT.
AND IF I PLUGGED IT INTO
MY PLACE VALUE CHART,
IT WOULD LOOK
LIKE THIS.

She writes 3 in hundreds, 6 in tens, 0 in ones, point in decimal and zero in tenths.

She says THREE DECIMAL SIX
TIMES ONE-HUNDRED
IS THREE-HUNDRED
AND SIXTY.
PRETTY EASY, RIGHT?
BEST OF LUCK TO YOU.