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Squares

Level 28 / realistic untimed

4d square D1:7-9 D4:7-9

5 visual steps / 4-digit square split

1. Split thousands

7897^21. Split thousands split into base and tail 7897=7000+897base square7000^249000000double product_tail square_
7897 as 7000 + 897.

7897 as 7000 + 897.

2. Double product

7897^22. Double product split into base and tail 7897=7000+897base square7000^249000000double product2 x 7000 x 89712558000tail square_
2 x 7000 x 897 = 12558000.

2 x 7000 x 897 = 12558000.

3. Tail square

7897^23. Tail square split into base and tail 7897=7000+897base square7000^249000000double product2 x 7000 x 89712558000tail square897^2804609
897^2 = 804609.

897^2 = 804609.

4. Combine parts

7897^24. Combine parts split into base and tail 7897=7000+897base square7000^249000000double product2 x 7000 x 89712558000tail square897^280460949000000 + 12558000 + 804609 = 62362609
49000000 + 12558000 + 804609 = 62362609.

49000000 + 12558000 + 804609 = 62362609.

5. Read answer

7897^25. Read answer Read answer 7897^2 = 62362609Read 7897^2 = 62362609; nearby7900^2 = 62410000 checks size.
Read 7897^2 = 62362609; nearby 7900^2 = 62410000 checks size.

Read 7897^2 = 62362609; nearby 7900^2 = 62410000 checks size.

Practice Level 28

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

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