Multiplication Level 12: 3d x 1d (tens carry). multi-digit window train. 1. Left edge247 times 31. Left edgeStart with the leftmost digit pair.247times3Active multiplication windowraw windows6raw -> 6 | _ | _Start with the leftmost digit pair.2. Slide windows2. Slide windowsMove one window at a time.247times3Active multiplication windowraw windows612raw -> 6 | 12 | _Move one window at a time.3. Raw strip3. Raw stripHold the raw totals in order.247times3Active multiplication windowraw windows61221raw -> 6 | 12 | 21Hold the raw totals in order.4. Settle strip4. Settle stripSettle once.Keep ones; carry moves left.raw windows6 | 12 | 21settled strip7 | 4 | 1Final multiplication answerKeep 1s; extra carry moves left.
