Answers:
1. 6 3/8+ 8 1/4
Find the common denominator for 8 1/4 which is 8. Multiply by 2 for the numerator and denominator.
(1)(2)/(4)(2)=2/8
6 3/8+8 2/8
Answer : 14 5/8
4. 8 11/12-6 1/4
Find the common denominator for 6 1/4 which is 3. Multiply by 3 for the numerator and denominator.
(1)(3)/(4)(3)=3/12
8 11/12-6 3/12
= 2 8/12
Reduce the fraction. Divide by 4 for the numerator and denominator.
8/4=2 , 12/4=3
Answer: 2 2/3