Remember that to find a 3s fact,
add a 2s fact and a 1s fact. To
find a 4s fact, double the product
of a 2s fact.
1.3 X 7=___
3. 4 X 10 =
5.3 x 8 =
7.9 X 3 =
2.4 ×9=_
4.3 X 10 =
6.8 × 4 =
8..10 X 4 =