Answer: 99 insects altogether.
Step-by-step explanation:
Adding two numbers add a time is easiest, rather than adding all four numbers together.
First, add 37 + 39 =. 76
add 12 to that sum, which equals 88.
76+12=88
to that sum, add the final number, 11.
88+11=99
so there are 99 bugs altogether.
