operations with rational numbers 7th

Solve the expression:
$19-\left(-0.5\right)$

• $19.5$

• $18.5$

• $-19.5$

• $-18.5$

Solve the expression:
$5+\left(-8\right)$

• $13$

• $-13$

• $3$

• $-3$

Solve the expression:
 $\frac{1}{2}\left(0.75\right)$  

•  $\frac{3}{8}$  

•  $\frac{0.75}{2}$  

•  $\frac{4}{6}$  

• 

• -6/12
• -5/12
• 5/12
• -5/7

solve 

• - 2/9
• - 5/9 
• 2/9
• no there

True or False: When you multiply or divide two negative numbers, the answer will be negative.

• True

• False

True or False: When you multiply or divide a positive number and a negative number, the answer will be negative.

• True

• False

What is the value of the expression -18 - (-44) ?

• -62

• - 26

• 62

• 26

Solve the expression:
$19-\left(-0.5\right)$

Solve the expression:
$5+\left(-8\right)$