1. Split thousands
1231 as 1000 + 231.
5 visual steps / 4-digit square split
1231 as 1000 + 231.
2 x 1000 x 231 = 462000.
231^2 = 53361.
1000000 + 462000 + 53361 = 1515361.
Read 1231^2 = 1515361.
Use the visible move, then type only when the answer is clear.
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