Simplify each of the following expressions without using a calculator.

1. $− 7 + 3\left(−4\right) + 5\left(2 + 9\right)$

   Hint 1(a):

   Try circling each term before beginning any simplification.

   Hint 2(a):

   It is important to start be simplifying the expression inside the parentheses.

   Hint 3(a):

   It could be helpful to think of subtracting a staking steps backward, and adding as taking steps forward.

2. $3.04 + 0.8 − 0.61$

   Hint (b):

   Adding and subtracting decimals is just like adding or subtracting any other integers.
   Just be sure to keep track of the decimal point!

   Answer (b):

   3.23

3. $\left(−2.4\right)\left(−0.01\right)$

   Hint 1(c):

   Remember that multiplying two negative numbers is like removing groups of a negative number.

   Hint 2(c):

   Multiplying decimals can be tricky, and deciding where to put the decimal point in your answer is especially hard.
   Here, it should be in the thousands place.

   Answer (c):

   $0.024$

4. $\frac { 1 } { 3 } \cdot 12 + \frac { 5 } { 6 }$

   Answer (d):

   $4\frac{5}{6}$