The 9 Fact
The 9 Fact
$0.99
3.OA.7
Less Challenging
More Challenging
About This Sprint
Use the 10-fact to efficiently access the 9-fact, e.g.
n x 10 - n = n x 9
(n x 10) - (n x 1) = n x 9
3.OA.7
Use the 10-fact to efficiently access the 9-fact, e.g.
n x 10 - n = n x 9
(n x 10) - (n x 1) = n x 9