01x09 - Naughty Number Nine

[bunniefuu]

[narrator] Look out,
here comes naughty number nine.

[shoes creaking]

♪ Number nine ♪

♪ Will put you on the spot ♪

♪ Number nine ♪

♪ Will tie you up
Oh in a knot ♪

♪ When you're tryin' ♪

♪ Multiplyin' by nine ♪

♪ You might give it
Everything you've got ♪

♪ And still be stopped ♪

♪ If you don't know
Some secret way ♪

♪ You can check on ♪

♪ You'll break your neck ♪

♪ On naughty number nine ♪

[birds tweeting]

♪ Now the first thing
To keep in mind ♪

♪ When you multiplyin' by nine ♪

♪ Is that it's one less than ten ♪

♪ You see nine is the same
As 10 - 1 ♪

♪ So you could multiply
Your number by ten ♪

♪ And then subtract the number
From the result ♪

♪ And you'd get
The same product ♪

♪ As if you'd multiplied by nine ♪

♪ And you knew it ♪

♪ I mean 8 times 9 is 80 - 8 ♪

♪ And 7 times 9 is 70 - 7 ♪

♪ And 6 times 9 is 60 - 6 ♪

♪ You could use those tricks ♪

♪ 'Cause you must have
Some secret way ♪

♪ You can beat it ♪

♪ Or else you'll meet it ♪

♪ With naughty number nine ♪

Of course, it doesn't hurt to know

the table of nines by memory.

It goes like this,

♪ 1 times 9 is 9 ♪

♪ And 2 times 9 is 18 ♪

♪ Mean ol' number nine ♪

♪ 3 times 9 is 27 ♪

♪ And 4 times 9 is 36 ♪

♪ 5 times 9 is 45 ♪

♪ And 6 times 9 is 54 ♪

♪ And 7 times 9 is 63 ♪

♪ 8 times 9 is 72 ♪

♪ 9 times 9 is 81 ♪

♪ And 10 times 9 is 90 ♪

Now, the digit sum
is always equal to nine.

I mean, if you add
two and seven, the digits--

You get nine, the digit sum.

That's true of any product of nine.

If they don't add up,
you've made a mistake.

♪ 'Cause you must have some secret way ♪

♪ You can't change it ♪

♪ Or else you'll wreck it ♪

♪ With naughty, nasty ♪

♪ Mean old number nine ♪

[scratching]

[chittering]