Everybody knows it...Multiplication - Loonatics Unleashed Online message boards

LexiHex2772 · Anthros

Everybody knows it...Multiplication

Martiangirl · Loonatic

Here's a trick they used to teach us at Catholic school. . .MEMORIZE! (twack) jk

Actually, being raised on School House Rock, I would just remember the songs.

-- Edited by Martiangirl at 21:38, 2007-02-21

Rye · Anthros

LexiHex2772 wrote:

I understand some schools don't teach multiplication but,at our school we do.Here are some strategies for the times tables:

2 times tables-double the number
3 times tables-double and add one more set
4 times tables-double and double again
5 times tables-count by 5's

We might be soon moving into the higher numbers in times tables like 12 or...I don't know.Next thing is DIVISION!Of course you all should know division!It's like subtracting only using reverse mulitplication for example:18 divided by 9 equals 9.See what I mean?

Are there seriously schools who don't teach multiplication? oO;
Figures I couldn't have gone to one of those schools... I hate multiplication. x3
Too bad I didn't know these kinds of tricks back in elementary.

LexiHex2772 · Anthros

You know Rye,I go to a school called Clifton School and there's one in Canada and another in New Zealand.It's true you know.I'm so lucky to have a teacher who teaches us tricks like using number lines,math strings,etc.We are working on division soon.I know some:

12 divided by 3 equals 4
30 divided by 5 equals 6
6 divided by 3 equals 2

the_oddity · O HAI THAR

I think my second grade teacher's songs are what made me memorize the times tables. :D They were awesome.

I developed a little system for the nines.

Take the number you're mulitplying by nine, then subtract one, and you get the first digit.
Take the number again, and you subtract it from ten. You get the second digit.

so -
3 x 9
3 - 1 = 2
10 - 3 = 7
therefore
3 x 9 = 27

Martiangirl · Loonatic

I remember a trick for the 9 times tables

hold out your hands and for the number you are multiplying 9 by, count off fingers starting from the left hand. The number of fingers left is the answer (only works up to ten though).

Ex. 9 X 7

count to your 7th finger (right index finger, and hold it down)
you'll be left with 6 (five fingers on left and thumb on right hand) and 3 (middle, ring, and pinky on right hand). So you have 6 and 3, so. 9 X 7= 63

Crossfire · Frelengian

Hey, that`s the same trick I use when multiplying nine. Thanks to what I dub the First-Digit Decremention rule, my answers to those kinds of mulitplications are almost instant!

9x0 = 0
9x1 = 9
9x2 = 18
9x3 = 27
9x4 = 36
9x5 = 45
9x6 = 54
9x7 = 63
9x8 = 72
9x9 = 81
9x10 = 90

Of course, multiplications such as 200 also work with this rule; i.e 9x400 = 3600.

-- Edited by Crossfire at 00:12, 2007-03-05

LexiHex2772 · Anthros

We are working on tacking on the zeroes in multiplication this year and I know a strategy to get the right answer:

15x6=

10x6=60 5x6=30-put the answers together and you get...

15x6=90!^__^ B.T.W.,we did this one in school last week.Oh shoot it was soooooo easy!