﻿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."

Shahana says HEY, TVO KIDS,
I'M TEACHER SHAHANA,
AND I'M HERE TODAY TO
SHOW YOU HOW TO SUBTRACT
THREE-DIGIT NUMBERS
WITH DECIMALS.
SO LET'S TRY IT OUT
WITH AN EXAMPLE.
NOW BEFORE WE START
NOTICE WE HAVE A SPECIAL
PLACE VALUE CHART
WHICH INCLUDES DECIMAL
PLACE VALUES ALL THE WAY
TO THE TEN THOUSANDTHS.
LET'S GIVE IT A TRY.
LET'S SAY WE HAVE THE
NUMBER FIVE HUNDRED SIXTY THREE
DECIMAL TWO HUNDRED ELEVEN.

She writes 5 in hundreds, 6 in tens, 3 in ones, point in decimal, 2 in tenths, 1 in hundredths and 1 in thousandths.

She continues AND WE NEED TO SUBTRACT
TWO THIRTY FIVE DECIMAL
THREE FORTY TWO.

She writes the number, adds a line below it and continues
SO AFTER WE HAVE OUR
NUMBERS ORGANIZED ON
THE PLACE VALUE CHART
WE START ALL THE WAY
OVER HERE IN OUR
THOUSANDTHS COLUMN.
WE HAVE A ONE
MINUS A TWO.
WE CAN'T REALLY DO
THAT SO WE NEED TO
GO OVER TO THE NEXT PLACE
VALUE, THE HUNDREDTHS COLUMN,
AND BORROW ONE HUNDREDTH.

She crosses out the 1 in the hundredths column and writes 0, then says
SO THE ONE BECOMES A ZERO,
AND WE BRING OVER THE
ONE HUNDREDTH OVER THERE.

She adds a 1 to the 1 in the thousandths column and says THAT BECOMES AN ELEVEN.
SO ELEVEN MINUS TWO
LEAVES US WITH A NINE.

She writes 9 under the line in the thousandths column.

Then, as she continues the process, she says
MOVING ON OVER TO THE
HUNDREDTHS PLACE VALUE,
WE CAN'T DO ZERO MINUS
FOUR SO WE NEED TO GO, AGAIN,
OVER TO THE NEXT PLACE
VALUE, THE TENTHS COLUMN,
THE TWO BECOMES A ONE, AND
YOU ADD ON THE ONE TENTH
OVER THERE, SO WE
HAVE TEN MINUS FOUR,
AND THAT GIVES US SIX.
KEEPING ON MOVING FORWARD,
SO WE'VE GOT ONE MINUS THREE.
CAN'T DO THAT.
WE GO OVER TO THE ONES PLACE
VALUE, AND I'M GOING TO
BORROW A ONE.
BRING IT OVER HERE TO THE
TENTHS, SO MY ONE BECOMES
AN ELEVEN.
AND THAT'S ELEVEN MINUS
THREE... LEAVES ME WITH EIGHT.
PUT IN MY DECIMAL
OVER THERE.
TWO MINUS FIVE,
CAN'T DO THAT.
I'M GOING TO
BORROW A TEN.
SIX BECOMES A FIVE,
AND ADD ONE TEN OVER THERE.
SO THAT BECOMES
TWELVE MINUS FIVE,
THAT GIVES ME SEVEN.
OKAY, FIVE MINUS THREE,
WE DON'T HAVE TO BORROW
IN ORDER TO DO THAT.
SO FIVE MINUS THREE
LEAVES ME WITH TWO.
AND THE VERY LAST STEP,
THE HUNDREDS COLUMN,
FIVE MINUS TWO LEAVES
ME WITH THREE.
SO IN THE END WE HAVE AN