Tuesday 1 August 2017

SIX TIMES TABLE STRATEGY

SIX TIMES TABLE STRATEGY 

I have used this strategy to support students in learning and recalling the 6 times tables.


If you multiply 6 by and even number.  It will end with the same number.

2 x 6 = 12

4 x 6 = 24

6 x 6 = 36

8 x 6 = 48

The number in the tens place is half of the number in the ones place.


Introduce students to multiplying even two digit numbers by 6

10 x 6 = 60

The zero goes to the ones place.
When an even  two digit number is multiplied by 6 whole number is divided by 2 and the tens number added.
10 is halved = 5
1 is added to make
The 6 goes in the tens place

12 x 6 = 7
2 goes to the ones place
half of 12 = 6
6 + the 1 (tens number) =

More confident students will enjoy testing this theory out; finding examples that it can be extended to larger numbers, see the examples below.  Encourage them to explain how the rule works, using their examples and strategies such as colour coding.

48 x 6 = 288
8 goes in the ones place
half of 48 = 24
24 + 4(tens) = 28 


312 x 6 = 1872
2 goes in the ones place
half of 312 = 156
Add the Hundreds and tens number to this so 156 + 31 = 187


4826 x 6 =28956
6 goes in the ones place
half of 4826 = 2413
Add the thousand, hundreds, and tens numbers to this so 2413 + 482 = 2895