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Anonymous
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117 units
There are: 13*19 = 247 square units
13*9 = 117 square units
There are: 13*9 = 117 square units
13 x 9 = 117 square units
6 + 7 = 13 13 can't fit into the ones place. Regroup 13 ones into one ten and three ones. Leave the three ones in the ones place and carry the one ten over to the tens place.
Multiply 13 by 9 and you get 117 square units.
13 x 9 = 117