### Home > CCAA > Chapter 6 Unit 9 > Lesson CC3: 6.1.3 > Problem6-31

6-31.

Simplify each expression.

Remember: When you are multiplying fractions, multiply the numerators together and the denominators together. When you are adding fractions, find the common denominator.

1. $\frac { 73 } { 100 } \cdot ( - \frac { 2 } { 7 } )$

$-\frac{73 \cdot 2}{100 \cdot 7} = -\frac{146}{700}$

Can this fraction be reduced?

1. $0.4·0.3$

$0.12$

1. $5 \frac { 1 } { 9 } + 8 \frac { 2 } { 5 }$

Make the expressions fractions greater than one, then find the common denominator.

1. $- 1.2 + ( - \frac { 3 } { 5 } )$

Make the two numbers similar; make both numbers fractions or make both numbers decimals. Be careful of the signs.