Without a calculator, compute the value of each expression below.  

1.  $7 − 2 · (−5)$ 

   Step (a):

   $7 − \left(−10\right)$

   Answer (a):

   $17$

2.  $6+3(7−3·2)^2$ 

   Hint (b):

   The exponent applies only to what is inside the parentheses.

3.  $5·(−3)^2$ 

• Answer (c):

  $45$

4.  $35\div(16−3^2)·2$ 

   Hint (d):

   See the order of operations.

5.  $−3·4+5·(−2)$ 

   Hint (e):

   See parts (a) through (d).

6.  $7−6(10−4·2)\div4$ 

   Hint (f):

   Do not confuse subtraction with a negative sign when multiplying.

   Answer (f):

   $4$