30 simple arithmetic exercises for computing without paper and pencil

Some simple arithmetic exercises for calculations without paper and pencil

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Math, Arithmetic

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10 sec

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0:52

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2 comments

Bossy Puffin judge Jun 22, 2020

Thank you for taking the effort to submit your test for the contest.
Unfortunately, this test will not be able to receive a prize:
Missing explanations.

Tall Monkey May 26, 2020

There is not any explanation.

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