You've uploaded a “Food Web Math Practice” worksheet with handwritten answers. I’ll
verify and explain each problem step-by-step using proper units and clear reasoning — as required by the instructions (“Show all your math setups using proper units! NO WORK NO CREDIT!”).
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##
✔ Problem 1:
Calculate the number of grasshoppers a hen needs per year.
Given:
- 1 hen eats
25 grasshoppers/day
- 1 year =
365 days
Calculation:
> Number of grasshoppers per hen per year =
> (25 grasshoppers / day) × (365 days / year)
=
9,125 grasshoppers/year
✔ Your answer is correct.
---
##
✔ Problem 2:
How many grasshoppers are needed for a year’s supply of hens for the farmer each year?
Given:
- The farmer lives on
1 hen/day for a year → This means he consumes
1 hen per day, so over a year, he uses:
> 1 hen/day × 365 days =
365 hens/year
- From Problem 1: Each hen requires
9,125 grasshoppers/year
Calculation:
> Total grasshoppers needed =
> (365 hens) × (9,125 grasshoppers/hen)
Let’s compute that:
365 × 9,125
= 365 × (9,000 + 125)
= (365 × 9,000) + (365 × 125)
= 3,285,000 + 45,625
=
3,330,625 grasshoppers
✔ Your answer is correct.
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##
✔ Problem 3:
What is the total mass, in kilograms, of the grasshoppers needed to feed all the hens for one year?
Given:
- 1,000 grasshoppers have a mass of
1 kg
So, mass per grasshopper = 1 kg / 1,000 grasshoppers =
0.001 kg/grasshopper
We need the total mass for
3,330,625 grasshoppers
Calculation:
> Total mass =
> (3,330,625 grasshoppers) × (1 kg / 1,000 grasshoppers)
= 3,330,625 ÷ 1,000
=
3,330.625 kg
✔ Your answer is correct.
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## 📝 Summary of Answers with Proper Units:
1.
9,125 grasshoppers/hen/year
2.
3,330,625 grasshoppers/year (for 365 hens)
3.
3,330.625 kg (total mass of grasshoppers)
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## 💡 Additional Notes:
- Your work is accurate and follows unit cancellation correctly.
- You could improve clarity by writing units in every step (e.g., “25 grasshoppers/day × 365 days/year = 9,125 grasshoppers/year”) — this helps avoid confusion and shows full understanding.
- In Problem 3, you wrote “gh” for grasshoppers — while acceptable shorthand, spelling out “grasshoppers” or using “gh” consistently with a key is better for formal work.
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##
✔ Final Verdict:
All three problems are solved correctly.
You’ve shown appropriate work and used proper units. Well done!
If you’d like to continue with the next problems (even though they’re blurred), feel free to upload a clearer image or type them out — I’m happy to help!
Parent Tip: Review the logic above to help your child master the concept of math practice with answer sheet.
