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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 eleven.
Now add seven to it.
Now subtract nine.
Now add six.
Now subtract four.
Now add nine.
Your answer is _____

Respuesta :

19allenethm

Answer:

20

Step-by-step explanation:

[tex]11+7=18\\\\18-9=9\\\\9+6=15\\\\15-4=11\\\\11+9=20[/tex]

Answer:

The answer of this Mental Arithmetic problem is 20.

Step-by-step explanation:

Think of the number eleven.

11

Now add seven to it.

[tex]11+7=18[/tex]

Now subtract nine.

[tex]18-9=9[/tex]

Now add six.

[tex]9+6=15[/tex]

Now subtract four.

[tex]15-4=11[/tex]

Now add nine.

[tex]11+9=20[/tex]

Your answer is 20.

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