Home > GB8I > Chapter 3 Unit 4 > Lesson INT1: 3.1.1 > Problem3-11

3-11.

Evaluate the following expressions.

1. $10 \frac { 7 } { 9 } + ( - 9 \frac { 2 } { 3 } )$

• Find a common denominator. Then this can be thought of a subtraction problem.

$1\frac{1}{9}$

1. $- 10 \frac { 7 } { 10 } - 2 \frac { 3 } { 5 }$

• See hint (a) for help.

1. $( 4 \frac { 1 } { 2 } ) ( - 3 \frac { 3 } { 10 } )$

• Convert each mixed number to a fraction greater than one before multiplying.

1. $- 8 \frac { 3 } { 5 } \div 1 \frac { 1 } { 5 }$

• $-7\frac{1}{6}$