Transcript Breaking Apart BIG *Ugly Multiplication Problems

Breaking Apart
BIG Ugly
Multiplication
Problems
What do I do if I have a BIG
ugly multiplication fact?????
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
Why break it up into smaller
pieces, of course!
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
Wait, wait, wait.
I’m still confused.
What does that mean?
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
OK, I’ll explain.
Let’s say you want to solve
Take the biggest factor and split it into 2
pieces.
QuickTime™ and a
TIF F (Uncompressed) decompressor
are needed to see this picture.
How do I know which
2 pieces?
Start with facts that are easy.
I know!
I know! I know!
Fives are easy
for me!
Quick Time™a nd a
TIFF ( Unco mpre ssed ) dec ompr esso r
ar e nee ded to see this pictur e.
OK.
QuickTi me™ and a
T IFF (Uncom pressed) decom pressor
are needed to see t his pict ure.
Then
start with
5.
5
4
Now
Multiply multiply 5 x 6
Then multiply 4 x 6
5 x 6 = 30
4 x 6 = 24
____________
30 + 24 =
54
Tah! Dah!
9 x 6 = 54
OK.
I’ll show you another way.
4x6
5x6
Now, that wasn’t so hard.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
It’s time for you to try.