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Mathematics, 15.08.2019 07:30 sairaanwar67

Mental arithmetic: work the following exercises in your head. do not calculate with a pencil or paper. do not use a
decimal.
think of the number seven.
now add eight to it.
now add four more.
now subtract nine.
now add three.
your answer is
14
13
12
11

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Answers: 2

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