Here are the step-by-step solutions for each problem on the worksheet.
1. Donuts Cost
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Step 1: Find out how many donuts are in 8 dozen. Since 1 dozen equals 12, multiply 8 by 12.
$8 \times 12 = 96$ donuts.
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Step 2: Calculate the total cost. Multiply the number of donuts (96) by the price per donut ($3.25).
$96 \times 3.25 = 312$.
2. Chemicals Cost
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Step 1: Convert the weight from grams to kilograms. There are 1,000 grams in 1 kilogram.
$25 \text{ g} \div 1,000 = 0.025 \text{ kg}$.
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Step 2: Calculate the cost. Multiply the weight in kg (0.025) by the price per kg ($15.00).
$0.025 \times 15.00 = 0.375$.
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Step 3: Round to money format (two decimal places).
$0.38.
3. Commute Distance
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Step 1: Find the daily distance. Mr. Eckert goes to work and back home, so he travels the 13 km distance twice a day.
$13 \times 2 = 26 \text{ km/day}$.
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Step 2: Find the weekly distance. He does this for 5 days a week.
$26 \times 5 = 130 \text{ km/week}$.
4. Basketball Points
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Step 1: Divide the total points needed by the points scored per game to find the number of games.
$81 \div 3 = 27$.
5. Candy Cost
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Step 1: Find the cost of a single piece of candy. Divide the price ($1.10) by the number of pieces (100).
$1.10 \div 100 = \$0.011$ per piece.
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Step 2: Multiply the cost per piece by the amount Ms. Johavas wants to buy (650 pieces).
$650 \times 0.011 = 7.15$.
6. Gas Usage
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Step 1: Divide the total distance by the car's fuel efficiency (km per liter) to find the liters needed.
$55 \div 7.8 = 7.0512...$
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Step 2: Round the answer to two decimal places.
$7.05$ liters.
Final Answer:
1. $312.00
2. $0.38
3. 130 km
4. 27 games
5. $7.15
6. 7.05 L
Parent Tip: Review the logic above to help your child master the concept of chemistry conversion practice worksheet.
