You are in Advanced/Addition section (level 2)

First read the following real number:

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

To put properly the multiple addition we introduce the bracket.

Example:

3 + 2 + 4 + 5 is the same thing of (3 + 2) + (4 + 5)

1 + 1 + 1 + 1 is the same thing of (1 + 1) + (1 + 1)

Hence:

3 + 1 + 2 + 2 = (3 + 1) + (2 + 2)

2 + 1 + 3 + 4 = (2 + 1) + (3 + 4) = 3 + 7 =10 ; note: (2 + 1) = 3 and (3 + 4) = 7

2 + 3 + 4 + 2 = (2 + 3) + (4 + 2)= 5 + 6 = 11

1 + 2 + 3 + 1 = (1 + 2) + (3 + 1)= 3 + 4 = 7

and:

(5+2) + 1 = 7 +1 = 8

(3 + 2) + 0 = 5 + 0 = 5

Now find the answer of each operation:

  1) (5 + 3) + 1 = answer

  2) (3 + 1) + 2 = answer

  3) (1 + 2) + (2 + 1) = answer

  4) (4 + 3) + 0 = answer

  5) (3 + 2) + (1 + 1) = answer

  6) (7 + 1) + 1 = answer

  7) (2 + 4) + (2 + 3) = answer

  8) (4 + 1) + (1 + 2) = answer

  9) (7 + 3) + 0 = answer

10) (4 + 1) + (4 + 2) = answer

11) (1 + 2) + (4+3) = answer

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