Fill in the blanks using 3 of these operation signs to complete each number sentence.

Question

* + - / (* means multiply)

question 1: 12 ___6 ___4 ___ 2=24

question 2: (12 ___ 6) __ (4 ___ 2)=36

Answer 1

Question 1: All addition:

12 + 6 + 4 + 2 = 24

Question 2:

(12 - 6) x (4 + 2) = 36
which leads to:
6 x 6 = 36

or

(12 + 6) x (4 - 2) = 36
which leads to:
18 x 2 = 36

These are just trial and error.

Answer 2

1/3k-4=1