3 years ago

Mental Arithmetic: work the following exercises in your head. Do not calculate with a pencil or paper. Do not use a

2 answers:

8 0

The answer is the second option (13)

6 0

7 + 8
15 + 4
19 - 9
10 + 3
13
I know it said not to work it out on paper but here’s how to get the answer.

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