The answer to the first is g+5 because sum means add.
in the second one the correct answer would be 5 because 12+5=17 and 12+1+4=17
the third one is 21 because 4 times 3 = 12 and 12+9=21.
question 4: base times height=P so 27 times 19 equals 513
question 5: 4 times 19 equals 76
Hope I helped.
