## Tuesday, September 24, 2013

### Stupendous Strategies for Learning Multiplication Facts!

We will be diving into multiplication beginning in October. Until that time, students are working independently on memorizing their multiplication facts. Here are some strategies they have learned to help them efficiently solve multiplication fact problems.

"The easy ones"
Any number x 0 = 0: (4 x 0 = 0, 9 x 0 = 0, 234 x 0 = 0)
Any number x 1 = itself:  (2 x 1 = 2, 6 x 1 = 6, 35 x 1 = 35)
Any number x 10, put a zero at the end:
(5 x 10 = 50, 8 x 10 = 80, 24 x 10 = 240)

Other strategies:

• Any number x 2 = double it:
(4 x 2 = 4 + 4 = 8, 7 x 2 = 7 + 7 = 14, 12 x 2 = 12 + 12 = 24)

"2, 4, 6, 8 who do we appreciate?"
"10, 12, 14 you're the smartest I've ever seen"
"16, 18, 20 I have brains a plenty"
"22, 24 we're done with 2's let's do some more!"

• Any number x 3       n x 3 = (n x 2) + (n x 1)
6 x 3 = (6 x 2) + (6 x 1) = 18
9 x 3 = (9 x 2) + (9 x 1) = 27
12 x 3 = (12 x 2) + (12 x 1) = 36

Or use our chant (sung to "I don't know but I've been told") to help you skip count:
"3, 6, 9, 12"
"15, 18, 21"
"24, 27"
"30, 33, 36"

• Any number x 4 = "double double" or x 2 twice
6 x 4 = (6 x 2) + (6 x 2) = 24
8 x 4 = (8 x 2) + (8 x 2) = 32
11 x 4 = (11 x 2) + (11 x 2) = 44

More strategies coming soon...