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Basics of Numbers Videos 8 videos

SAT Math 4.3 Numbers and Operations
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SAT Math 4.3 Numbers and Operations

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The precise placement of a decimal point can be the difference between life and death. Or... at least, between placing at the Olympics and falling...

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Place Value 4523 Views


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Description:

The precise placement of a decimal point can be the difference between life and death. Or... at least, between placing at the Olympics and falling short. Although we hear a fourth place finish at the Games feels like death.

Language:
English Language

Transcript

00:04

place value a la shmoop speedy O'Connor has been training all [Speedy running outdoors]

00:08

spring for the Summer Olympics to practice he's been running around and

00:12

around his parents living room honestly it's driving them nuts makes it

00:16

really hard to watch television at last the big day arrives and speedy runs his [Speedy running on a track]

00:21

best event, the 400 meters it was a close finish so he eagerly looks up at

00:26

the board to find his exact time only to see that he ran the race in four hundred

00:31

seventy two point three seconds huh that can't be right if you divide that [Girl shaking her head]

00:36

number by 60 it works out to almost eight minutes and there's no way he was

00:40

that slow while Phillip the timekeeper must be responsible for this...

00:44

that guy was always having decimal issues speedy goes to talk to Phillip [Speedy speaks to Philip]

00:48

and give him a piece of his mind as it stood speedy showed a time of 472.3

00:55

seconds that's a 4 in the hundredths place seven in a tens place a 2 in the

00:59

ones and a 3 in the tenths place...Speedy alerted the timekeeper to his error but

01:07

then overcompensated by moving the decimal two spaces to the left now the

01:11

board showed that speedy had run his race in a time of 4.723 seconds

01:16

that's a 4 in the ones place a 7 in the tenths place a 2 in the hundredths place

01:23

and a 3 in the thousandths place it's a great time but not humanly possible so [Robots running]

01:30

speedy asked the timekeeper to try again this time the timekeeper moved the

01:34

decimal only one spot to the right giving speedy

01:36

a time of 47.23 seconds that's more like it looking up the board

01:41

speedy sees that swifty Stephenson posted a time of 47.18 seconds

01:46

rapido Roosevelt posted a time of 47.19

01:48

seconds and nippy Nottingham's posted a time of 47.22

01:52

seconds just barely edging out speedy and keeping him off [Speedy stood beside podium]

01:57

the podium oh well to give you an idea of how small that number in the hundreds

02:02

place can be check out how little difference there was between the four

02:05

runners one hundredths of a second is all that separated speedy and nippy and

02:09

there are a hundred of those in a single second talk about close all right it's

02:15

disappointing but speedy is a competitor and he's not gonna let this get him down [Speedy running around a couch with his parents sat]

02:19

it's back to his parents living room for another four years

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