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Squares

Level 29 / mastery

4d square full range

5 visual steps / 4-digit square split

1. Split thousands

4321^21. Split thousands split into base and tail 4321=4000+321base square4000^216000000double product_tail square_
4321 as 4000 + 321.

4321 as 4000 + 321.

2. Double product

4321^22. Double product split into base and tail 4321=4000+321base square4000^216000000double product2 x 4000 x 3212568000tail square_
2 x 4000 x 321 = 2568000.

2 x 4000 x 321 = 2568000.

3. Tail square

4321^23. Tail square split into base and tail 4321=4000+321base square4000^216000000double product2 x 4000 x 3212568000tail square321^2103041
321^2 = 103041.

321^2 = 103041.

4. Combine parts

4321^24. Combine parts split into base and tail 4321=4000+321base square4000^216000000double product2 x 4000 x 3212568000tail square321^210304116000000 + 2568000 + 103041 = 18671041
16000000 + 2568000 + 103041 = 18671041.

16000000 + 2568000 + 103041 = 18671041.

5. Read answer

4321^25. Read answer Read answer 4321^2 = 18671041Read 4321^2 = 18671041; nearby4300^2 = 18490000 checks size.
Read 4321^2 = 18671041; nearby 4300^2 = 18490000 checks size.

Read 4321^2 = 18671041; nearby 4300^2 = 18490000 checks size.

Practice Level 29

Use the visible move, then type only when the answer is clear.

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