Tuesday, March 30, 2010

MATH MNEMONIC

The 9 Times Table

When Multiplying by 9…

the digits of the answers always add up to nine.

For example,

2x9=18

(1+8=9)

3x9=27

(2+7=9)

and so on.

Teachers! let students find out more .......

1 comment:

  1. i had trouble with multiples of 9 up until my mum showed me something similar to your post.

    1x9= 0 9
    2x9= 1 8
    3x9= 2 7
    4x9= 3 6
    5x9= 4 5
    6x9= 5 4
    7x9= 6 3
    8x9= 7 2
    9x9= 8 1
    9x10=9 0

    note how the two colums move numerically?
    the first column moves from 0 to 9.
    the second column moves from 9 to 0. it helped for emergencies! thanks mum!

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