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find the sum and difference of the numbers below . match each answer to he letter in the key . then write the letter on the line above its problem number.
1. 5/20 + 9/20= _____
2.14/15-7/15=______
3. 5/11 - 2/11=_____
4. 4/8 + 2/16=______
5. 3/21 +4/21 =______
6.11/17 - 9/17=______
7. 9/4 - 5/4 =_____
8. 2/13 + 9/13=____
9.7/27 - 1/=_____
10.25/20 - 9/10=____

KEY:

R 7/10 E 2/17 E 5/8 P 4/27 M 7/15 Y 11/13 A 1
T 7/20 V1/ II3/