Multiplication Level 3: 2d x 1d (no carry). 2x1 window product. 1. Tens window23 times 31. Tens windowKeep the left raw digit.23times3Active multiplication windowraw windows6raw -> 6 | _Keep the left raw digit.2. Ones window2. Ones windowKeep the ones digit.23times3Active multiplication windowanswer strip6923 x 3 = 69Keep the ones digit.
