# Transcript: Adding Two Digit Numbers

Teacher Charmain stands in front of a big screen. On the screen, a place value chart appears with columns from left to right that read "Hundreds, tens, ones, decimals, tenths, hundredths, thousands."

Teacher Charmain is in her twenties, with brown hair in a low ponytail. She wears jeans and a blue Homework Zone T-shirt.

She says HI, TVOKIDS.

IT'S TEACHER

CHARMAIN HERE.

TODAY WE'RE GOING TO

ADD LARGE NUMBERS,

BUT WITH DECIMALS.

SO, WE'RE GOING TO

DO A TWO-DIGIT BY

TWO-DIGIT ADDITION

WITH A DECIMAL IN IT.

DON'T BE FRIGHTENED.

A DECIMAL DOESN'T

REALLY CHANGE MUCH

OF WHAT YOU

ALREADY KNOW.

SO, LET'S DO A

NUMBER TOGETHER.

HOW ABOUT IF WE DO

THIRTY-TWO AND

FORTY-THREE HUNDREDTHS.

She puts a 3 in the tens column, a 2 in the ones, a period in the decimal columns, a 4 in the tenths and a 3 in the hundredths.

She says AND, WE'RE GOING

TO ADD THAT TO...

ELEVEN AND

FIFTY-EIGHT HUNDREDTHS.

She puts a 1 in the tens column, a 1 in the ones, a period in the decimal column, a 5 in the tenths, and an 8 in the hundredths column.

She says SO, I'M GOING TO PUT

MY EQUAL SIGN HERE,

SO THAT ANYTHING

UNDERNEATH THAT

IS GOING TO BE MY

SUM AS MY ANSWER.

SO, THE FIRST THING

WE'RE GOING TO DO

IS START OVER IN

THE HUNDREDTHS' COLUMN

BECAUSE THAT'S WHERE

THE LAST DIGITS ARE,

AND WE'RE GOING TO ADD

THOSE TOGETHER NORMALLY.

WE'RE GOING TO COMPLETELY IGNORE

THE DECIMAL AT THIS POINT.

WE'RE GOING TO ADD THREE PLUS

EIGHT WHICH IS ELEVEN.

I'M GOING TO PUT

THE ONE HERE,

AND I HAVE TO

CARRY OVER THE TEN

FROM THE ELEVEN INTO

THE TENTHS' COLUMN.

I'M GOING TO ADD THE THREE

DIGITS IN THE TENTHS' COLUMN,

SO ONE PLUS FOUR

IS FIVE,

AND FIVE PLUS FIVE

IS TEN.

I PUT THE ZERO HERE

FROM THE TEN AND THEN

I'M GOING TO CARRY IT OVER

TO THE ONES' COLUMN HERE.

NOW, I HAVE THIS

DECIMAL HERE AND

IN ADDING, WE CAN JUST

PUT THE DECIMAL HERE.

IT'S NOT GOING TO

CHANGE OR MOVE

FROM WHERE IT

ALREADY IS.

WE KNOW THE DECIMAL

IS GOING TO BE THERE

NO MATTER WHAT.

SO I CAN CONTINUE

MY ADDING.

I'VE GOT THE THREE DIGITS:

ONE PLUS TWO WHICH IS THREE,

AND THREE PLUS ONE

WHICH IS FOUR.

AND THEN IN MY TENS' COLUMN,

I HAVE THREE PLUS ONE

WHICH I KNOW IS FOUR.

AND THAT GIVES ME

MY COMPLETE SUM.

AND MY ANSWER IS FORTY-FOUR

AND ONE HUNDREDTHS.

SO REMEMBER WHEN YOU'RE

ADDING WITH A DECIMAL,

THE DECIMAL GOES IN

THE EXACT SAME PLACE

IN YOUR SUM AS IT IS

IN THE ADDITION PART.

SO YOU DON'T HAVE TO

MOVE IT OR ANYTHING.

IT STAYS RIGHT

WHERE IT IS.

AND YOU JUST ADD LIKE

YOU NORMALLY WOULD

AND CARRY AS YOU

NORMALLY WOULD.

GOOD LUCK WITH YOUR

DECIMAL ADDING.

THANKS, TVOKIDS.

Teacher Charmain is in her twenties, with brown hair in a low ponytail. She wears jeans and a blue Homework Zone T-shirt.

She says HI, TVOKIDS.

IT'S TEACHER

CHARMAIN HERE.

TODAY WE'RE GOING TO

ADD LARGE NUMBERS,

BUT WITH DECIMALS.

SO, WE'RE GOING TO

DO A TWO-DIGIT BY

TWO-DIGIT ADDITION

WITH A DECIMAL IN IT.

DON'T BE FRIGHTENED.

A DECIMAL DOESN'T

REALLY CHANGE MUCH

OF WHAT YOU

ALREADY KNOW.

SO, LET'S DO A

NUMBER TOGETHER.

HOW ABOUT IF WE DO

THIRTY-TWO AND

FORTY-THREE HUNDREDTHS.

She puts a 3 in the tens column, a 2 in the ones, a period in the decimal columns, a 4 in the tenths and a 3 in the hundredths.

She says AND, WE'RE GOING

TO ADD THAT TO...

ELEVEN AND

FIFTY-EIGHT HUNDREDTHS.

She puts a 1 in the tens column, a 1 in the ones, a period in the decimal column, a 5 in the tenths, and an 8 in the hundredths column.

She says SO, I'M GOING TO PUT

MY EQUAL SIGN HERE,

SO THAT ANYTHING

UNDERNEATH THAT

IS GOING TO BE MY

SUM AS MY ANSWER.

SO, THE FIRST THING

WE'RE GOING TO DO

IS START OVER IN

THE HUNDREDTHS' COLUMN

BECAUSE THAT'S WHERE

THE LAST DIGITS ARE,

AND WE'RE GOING TO ADD

THOSE TOGETHER NORMALLY.

WE'RE GOING TO COMPLETELY IGNORE

THE DECIMAL AT THIS POINT.

WE'RE GOING TO ADD THREE PLUS

EIGHT WHICH IS ELEVEN.

I'M GOING TO PUT

THE ONE HERE,

AND I HAVE TO

CARRY OVER THE TEN

FROM THE ELEVEN INTO

THE TENTHS' COLUMN.

I'M GOING TO ADD THE THREE

DIGITS IN THE TENTHS' COLUMN,

SO ONE PLUS FOUR

IS FIVE,

AND FIVE PLUS FIVE

IS TEN.

I PUT THE ZERO HERE

FROM THE TEN AND THEN

I'M GOING TO CARRY IT OVER

TO THE ONES' COLUMN HERE.

NOW, I HAVE THIS

DECIMAL HERE AND

IN ADDING, WE CAN JUST

PUT THE DECIMAL HERE.

IT'S NOT GOING TO

CHANGE OR MOVE

FROM WHERE IT

ALREADY IS.

WE KNOW THE DECIMAL

IS GOING TO BE THERE

NO MATTER WHAT.

SO I CAN CONTINUE

MY ADDING.

I'VE GOT THE THREE DIGITS:

ONE PLUS TWO WHICH IS THREE,

AND THREE PLUS ONE

WHICH IS FOUR.

AND THEN IN MY TENS' COLUMN,

I HAVE THREE PLUS ONE

WHICH I KNOW IS FOUR.

AND THAT GIVES ME

MY COMPLETE SUM.

AND MY ANSWER IS FORTY-FOUR

AND ONE HUNDREDTHS.

SO REMEMBER WHEN YOU'RE

ADDING WITH A DECIMAL,

THE DECIMAL GOES IN

THE EXACT SAME PLACE

IN YOUR SUM AS IT IS

IN THE ADDITION PART.

SO YOU DON'T HAVE TO

MOVE IT OR ANYTHING.

IT STAYS RIGHT

WHERE IT IS.

AND YOU JUST ADD LIKE

YOU NORMALLY WOULD

AND CARRY AS YOU

NORMALLY WOULD.

GOOD LUCK WITH YOUR

DECIMAL ADDING.

THANKS, TVOKIDS.

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