Teacher Shahana stands in a studio next to a large touchscreen. She has long brown hair and wears 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, ten thousandths."

A caption reads "Teacher Shahana."

Shahana says HEY, TVO KIDS,
I'M TEACHER SHAHANA,
AND I'M HERE TO SHOW
YOU HOW TO SUBTRACT
TWO-DIGIT NUMBERS
WITH DECIMALS.
NOW IN ORDER TO DO THAT
WE NEED A SPECIAL
PLACE VALUE CHART THAT
HAS DECIMAL PLACE VALUES.
LET'S GIVE IT A TRY
WITH AN EXAMPLE.
SUPPOSE WE HAVE THE
NUMBER EIGHTY SEVEN
DECIMAL FORTY THREE.

She writes 8 in tens, 7 in ones, point in decimal, 4 in tenths and 3 in hundreths.

She says AND FROM THAT WE HAVE
TO SUBTRACT SIXTY FIVE
DECIMAL FORTY SIX.

She writes 65.46 under the other number and adds a line below.

Then she says LET'S SEE WHAT
WE'VE GOT HERE.
SO STARTING OVER HERE,
WE ALWAYS START
IN THE VERY LAST PLACE VALUE
WE HAVE THE HUNDREDTHS COLUMN.
AND NOTICE THAT WE'VE
GOT A THREE MINUS A SIX.
WE CAN'T REALLY DO THAT
SO WE HAVE TO GO OVER
TO THE NEXT PLACE VALUE,
WHICH IS THE TENTHS,
AND BORROW ONE TENTH...

She crosses out the 4 in tenths, adds a 3 next to it and then adds a 1 to the 3 in hundredths, turning it into 13.

She continues
SO THAT BECOMES A THREE.
AND ADD THE TENTH OVER HERE,
SO TEN PLUS THREE GIVES US
THIRTEEN HUNDREDTHS.
AND THEN WE'LL KEEP GOING
UNTIL WE HAVE THE RIGHT
NUMBERS HERE.

As she continues changing the numbers in each column she says
SO WE HAVE A THREE
MINUS A FOUR.
AGAIN, WE
CAN'T DO THAT.
SO WE GO OVER TO THE ONES
PLACE VALUE AND BORROW
A ONE FROM THERE.
THAT BECOMES A SIX, AND THEN
THIS WE ADD ON A ONE OVER THERE.
AND THEN I THINK WE'RE
GOOD FOR THE LAST COLUMN.
WE'VE GOT AN
EIGHT MINUS SIX,
SO WE CAN LEAVE
IT JUST AS IS.
WE GO ALL THE WAY BACK TO
THE HUNDREDTHS PLACE VALUE,
THIRTEEN MINUS SIX
GIVES US SEVEN.
THIRTEEN MINUS A FOUR
GIVES US A NINE.
OVER HERE SIX MINUS
FIVE GIVES US A ONE.
AND EIGHT MINUS SIX
LEAVES US WITH TWO.

As she writes down each number, she forms the final number 21.97.

She says SO WE GET AN ANSWER OF TWENTY
ONE DECIMAL NINETY SEVEN.
THANKS FOR JOINING
ME, TVO KIDS.
I'M TEACHER SHAHANA.
AND NOW YOU KNOW HOW TO
SUBTRACT TWO-DIGIT NUMBERS
WITH DECIMALS.