Here are the step-by-step solutions for each problem on the worksheet.
1) State Fair Wages
*
Regular Pay: First, find out how much they made during regular hours.
4 employees $\times$ 10 hours $\times$ \$8.18/hour =
\$327.20
*
Overtime Pay: Next, calculate the overtime earnings. The overtime rate is an *extra* \$2.18 per hour.
4 employees $\times$ 3 hours $\times$ \$2.18/hour =
\$26.16
*
Total: Add the regular pay and the overtime pay together.
\$327.20 + \$26.16 =
\$353.36
2) Temperature Change
*
Start: The temperature started at -3° C.
*
Drop: It dropped another 15 degrees. Going down from a negative number makes it colder (more negative).
-3 - 15 =
-18° C
*
Rise: From noon to 7:00 PM is 7 hours. The temperature rose 2 degrees every hour.
7 hours $\times$ 2 degrees =
14 degrees total rise.
*
Final Temp: Add the rise to the low temperature.
-18 + 14 =
-4° C
3) Trivia Game Score
*
Points Gained: Paige got 8 questions correct. Each is worth 400 points.
8 $\times$ 400 =
+3,200 points
*
Points Lost: She got 6 questions incorrect. Each loses 600 points.
6 $\times$ 600 =
-3,600 points
*
Net Change: Combine the gained and lost points.
3,200 - 3,600 =
-400 points
*
Final Score: Add the net change to her starting score of -700.
-700 + (-400) =
-1,100 points
4) Movie Trip Cost
*
People: Rachel plus 4 friends equals
5 people.
*
Tickets: 5 tickets $\times$ \$11 each =
\$55.00
*
Popcorn: They bought 2 popcorns at \$5.50 each.
2 $\times$ \$5.50 =
\$11.00
*
Soda: All 5 people bought soda at \$3.75 each.
5 $\times$ \$3.75 =
\$18.75
*
Total: Add up all the costs.
\$55.00 + \$11.00 + \$18.75 =
\$84.75
5) Restaurant Profit
*
Cost of Beef: 4 pounds $\times$ \$9.25 =
\$37.00
*
Cost of Potatoes: 6 pounds $\times$ \$6.96 =
\$41.76
*
Cost of Carrots: 5 pounds $\times$ \$9.81 =
\$49.05
*
Total Cost: Add the cost of all supplies.
\$37.00 + \$41.76 + \$49.05 =
\$127.81
*
Total Revenue (Sales): The chef makes 28 meals sold at \$48.32 each.
28 $\times$ \$48.32 =
\$1,352.96
*
Profit: Subtract the total cost from the total sales.
\$1,352.96 - \$127.81 =
\$1,225.15
──────────────────────────────────────
Final Answer:
1. $353.36
2. -4° C
3. -1,100 points
4. $84.75
5. $1,225.15
Parent Tip: Review the logic above to help your child master the concept of 7 ns 3 worksheet.
