Let's solve each of the
decimal word problems step by step and explain the solutions clearly.
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Question 1
I earn $5.50 per hour. I work 8 hours per day. How much will I earn after 5 days?
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Step-by-step Solution:
- Earnings per hour = $5.50
- Hours per day = 8
- Days = 5
First, calculate daily earnings:
> $5.50 × 8 = $44.00 per day
Now, total for 5 days:
> $44.00 × 5 =
$220.00
✔ Answer: $220.00
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Question 2
Jenny bought 4.35 kg of chocolate. She made 10 chocolate cakes. She put 0.35 kg of chocolate on each cake. How much chocolate did she have left?
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Step-by-step Solution:
- Total chocolate bought = 4.35 kg
- Chocolate used per cake = 0.35 kg
- Number of cakes = 10
Total chocolate used:
> 0.35 × 10 = 3.50 kg
Chocolate left:
> 4.35 − 3.50 =
0.85 kg
✔ Answer: 0.85 kg
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Question 3
Erik earns $1,000 per week. He works 50 hours per week. How much does he earn per hour?
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Step-by-step Solution:
- Weekly earnings = $1,000
- Hours per week = 50
Hourly rate:
> $1,000 ÷ 50 =
$20.00 per hour
✔ Answer: $20.00 per hour
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Question 4
Peter bought 5 kg of meat. He used 1.10 kg to make hamburgers. The rest he used to make 13 portions of spaghetti. How much meat did he use per portion of spaghetti?
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Step-by-step Solution:
- Total meat = 5 kg
- Meat used for hamburgers = 1.10 kg
- Meat left for spaghetti = 5 − 1.10 =
3.90 kg
This 3.90 kg is divided into 13 portions:
> 3.90 ÷ 13 =
0.30 kg per portion
✔ Answer: 0.30 kg per portion
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Question 5
Nigel bought 10 pencils and 5 erasers for $8. The price of 2 pencils was $1. What was the price of 2 erasers?
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Step-by-step Solution:
We are told:
- Price of 2 pencils = $1 → So, price of 1 pencil = $0.50
- Nigel bought 10 pencils → Cost of pencils = 10 × $0.50 = $5.00
- Total cost = $8 → So, cost of 5 erasers = $8 − $5 = $3.00
Now, we want the price of
2 erasers:
- 5 erasers cost $3.00 → So, 1 eraser costs $3.00 ÷ 5 = $0.60
- Therefore, 2 erasers cost = 2 × $0.60 =
$1.20
✔ Answer: $1.20
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✔ Final Answers Summary:
| Question | Answer |
|--------|--------|
| 1 | $220.00 |
| 2 | 0.85 kg |
| 3 | $20.00 per hour |
| 4 | 0.30 kg per portion |
| 5 | $1.20 |
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Parent Tip: Review the logic above to help your child master the concept of decimal word problems worksheet.