Add and Subtract, Then Decode the Riddles

Solve the math problems, then use the alphabet code to answer the joke.

Alphabet Code:

1 = a 2 = b 3 = c

4 = d 5 = e 6 = f

7 = g 8 = h 9 = i

10 = j 11 = k 12 = l

13 = m 14 = n 15 = o

16 = p 17 = q 18 = r

19 = s 20 = t 21 = u

22 = v 23 = w 24 = x

25 = y 26 = z

What do you call an owl with a deep voice?   _________________________________

	Number	Use the abc code to get a	Letter
3 + 7 - 9 =	1	--------->	A
11 + 1 - 5 =		--------->
11 + 12 - 5 =		--------->
16 - 2 + 1 =		--------->
11 + 17 - 5 =		--------->
16 - 5 + 1 =		--------->

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Someone said you sound like an owl.   _________________________________?

17 + 13 - 7 =		--------->
8 + 2 - 2 =		--------->
16 - 2 + 1 =		--------->

For further information log on website :
http://www.enchantedlearning.com/math/solvethendecode/addsubtract/owl.shtml