Math Boot Camp Stadium

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[1] Dustin　4 / 5　33.6 sec.

Pre Math Boot Camp 0009-002
Japanese ed. / Amazon Kindle / 1-digit plus 1-digit addition without regrouping + 1-digit plus 1-digit addition with regrouping

[Stage 5]

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①: ( 6.4 sec. )

②: ( 6.2 sec. )

③: ( 6.3 sec. )

④: ( 7.7 sec. )

⑤: ( 7.0 sec. )

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Total: 33.6 sec.

2020/02/06 14:32:31

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