Mrs. Swanson
Lone Star Middle School
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Online Resources:
Online Practice for the Direct Math Assessment:
http://www.sde.idaho.gov/site/math/dma_docs/ToolkitSectionIV6th.pdf
http://www.math.com/
http://www.funbrain.com/
http://coolmath.com/
www.mathplayground.com
www.mathblaster.com
Divisibility Rules:
Divisible by:
2
if it is an even #.
(ends in 0 2 4 6 8)
3
if the sum (+) of the digits is divisible by 3
(5121 5+1+2+1=9, 9 is evenly divisile by 3)
4
if the last 2 digits are divisible by 4
(120,5
24
24/4=6 or 120,100 100/4=25)
5
if the # ends with a zero or 5
(105; 1230)
6
if it is divisible by 2 and by 3 then it is divisible by 6 (6,12,18….)
9
if the sum (+) of the digits is divisible by 9
(120,204 1+2+0+2+0+4=9)
10
if the # ends in a zero.
(10;20; 30….)