Solve the following: a. 3/10+4/10=____
b. 12/10+9/10=____
c. 3/100+4/100=____
d. 27/100+7/100=____
e. 4/1000+3/1000=____
f. 39/1000+5/1000=____
g. 5/10+7/1000=____
h. 4+4/10+4/10=____
i. 8/1000+6+8/1000=____
Identify the integer for each situation and explain what 0 signifies: 1. Team loses 10 yards: integer -10, 0 means no yardage change. 2. Point in Yuma is 70 feet above sea level: integer 70, 0 means sea level. 3. Temperature is 40 degrees below zero: integer -40, 0 means freezing point. 4. Larry withdraws \$30: integer -30, 0 means no money change. 5. Tricia's golf score is 7 below par: integer -7, 0 means par score. 6. Chlorine ion has one more electron than proton: integer 1, 0 means equal protons and electrons.
13. A music teacher has 4 drum kits. Each kit has 2 drumsticks. Each drumstick costs $3. How many drumsticks does she have? What is the cost to replace them all?