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#6 The Number 8

An interesting number is 8.  Make a complete table of 8's as started below.
        1 x 8 =   8    (0+8 = 8)

2 x 8 =  16   (1+6 = 7)

3 x 8 =  24   (2+4 = 6)

4 x 8 = 32    (3+2 = 5)

        5 x 8 = ___   
        6 x 8 = ___   
        7 x 8 = ___   
        8 x 8 = ___   
What do you notice about the sum of the figures of each product? (Look in the parentheses.) Do they decrease in order: 8, 7, 6, 5, 4, 3, 2, 1?
Is this true for larger numbers?  Try multiplying 8 by 19, 20, 21, 22, 23, 24, 25, 26.

It should work!

If you haven't tried these yet... go for it!

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Page by: Mathman (Bruce A. Titen) 1998

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