Regrouping
18 x 5 =
90
12 x 4 =
48
12 x 7 =
84
144 / 12 =
12
?23 x 6 = 3,13?
523 x 6 = 3,138
12 x 6 =
72
22 x 3 =
66
8 x 9 =
72
49 / 7 =
7
308 x ? = ?16
308 x 2 = 616
356 x 4 =
1,424
13 x 3 =
39
11 x 10 =
110
72 / 9 =
8
7,349 x 9 =
66,141
584 x 3 =
1,752
142 x 2 =
284
9 x 12 =
108
60 / 12 =
5
689 x 48 =
33,072
509 x 6 =
3,054
432 x 2 =
864
13 x 6 =
78
45 / 5 =
9
17,543 x 23 =
403,489