so just remember PEMDAS
a. 2 x 5= 10 and 3 x 2= 6 so 6+10= 16 16+4=20 answer is 20
b.3 x 2=6 6+5= 11 11+4= 15 15 x 2= 30 answer is 30
c. 2+4=6 6 x 3 = 18 2 x 5 = 10 10+18= 28 answer is 28
d. 5+3=8 8 x 2=16 16 x 2= 32 32+ 4= 36 answer is 36
e. 2 x 5= 10 3 x 2= 6 10+6=16 16+4=20 answer is 20
f. 5+3=8 2+4=6 2 x 8=16 16 x 6= 96 answer is 96
