CPM Homework Help : CC3 Problem 6-31

Simplify each expression.

Hint:

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

$\frac { 73 } { 100 } \cdot ( - \frac { 2 } { 7 } )$
Answer (a):
$-\frac{73 \cdot 2}{100 \cdot 7} = -\frac{146}{700}$
Can this fraction be reduced?

$0.4·0.3$
Answer (b):
$0.12$

$5 \frac { 1 } { 9 } + 8 \frac { 2 } { 5 }$
Hint (c):
Make the expressions fractions greater than one, then find the common denominator.

$- 1.2 + ( - \frac { 3 } { 5 } )$
Hint (d):
Make the two numbers similar; make both numbers fractions or make both numbers decimals. Be careful of the signs.