### Home > ACC6 > Chapter 4 Unit 4 > Lesson CC1: 4.2.4 > Problem4-81

4-81.

This problem is a checkpoint for addition and subtraction of mixed numbers. It will be referred to as Checkpoint .

Compute each sum or difference. Simplify if possible.

1. $5 \frac { 1 } { 2 } + 4 \frac { 2 } { 3 }$

1. $1 \frac { 5 } { 6 } + 2 \frac { 1 } { 5 }$

1. $9 \frac { 1 } { 3 } - 4 \frac { 1 } { 5 }$

1. $10-8\frac{2}{3}$