Math Scavenger Hunt activity sheet for students to find math-related items in a grocery store.
Math Scavenger Hunt worksheet with instructions for finding items in a grocery store, featuring a cartoon shopper and a grocery store illustration.
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Step-by-step solution for: Kaytes Class! : Number Systems 2 (Spring 2013) Project 1 - Math ...
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Show Answer Key & Explanations
Step-by-step solution for: Kaytes Class! : Number Systems 2 (Spring 2013) Project 1 - Math ...
Let’s go through each of the 9 scavenger hunt items one by one. Since this is meant to be done in a grocery store, we’re looking for real-life examples you might find on price tags, sale signs, dates, or product labels.
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1. A decimal with the number 9 in the tenths place
The “tenths place” is the first digit after the decimal point. So we need something like _._9_
Example: $2.95 → the 9 is in the tenths place.
✔ You could look for any item priced at $X.9Y — like $1.99, $3.90, etc.
---
2. Something that is about double the price of a chocolate bar
First, pick a chocolate bar. Let’s say it costs $1.50. Double that is $3.00.
So look for something around $3.00 — maybe a small bag of chips, a yogurt pack, or a bottle of juice.
✔ Example: If chocolate bar = $1.25, then double ≈ $2.50 → look for an item near that price.
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3. Something that is on sale for more than either 1/4 or 1/5 of its original price
This means the discount is MORE than 25% (since 1/4 = 25%) OR more than 20% (since 1/5 = 20%).
Actually, re-reading: “on sale for more than either 1/4 or 1/5 of its original price” — that wording is tricky.
Wait — let’s parse it carefully:
> “Something that is on sale for more than either 1/4 or 1/5 of its original price.”
That would mean: Sale Price > (1/4 × Original) OR Sale Price > (1/5 × Original)
But that doesn’t make sense because if something is on sale, the sale price is usually LESS than original.
Ah — I think there’s a mistake in interpretation. The hint says: “Remember how to change fractions to percents.” And it says “on sale for more than either 1/4 or 1/5...”
Actually, rereading: It probably means the discount is more than 1/4 or 1/5 — meaning you save more than 25% or 20%.
But the wording says: “on sale for more than...” which implies the sale price is higher than those fractions — which would mean almost no discount.
Wait — perhaps it’s poorly worded, and it means: “on sale for less than 1/4 or 1/5 of original price”? But that would be a huge discount.
Alternatively, maybe it means: the sale price is more than 1/4 OR more than 1/5 — which is almost always true unless it’s free.
I think the intended meaning is: Find something where the discount is greater than 1/4 (25%) or 1/5 (20%). That makes sense for a scavenger hunt.
But the text says: “on sale for more than either 1/4 or 1/5 of its original price”
Let me try an example:
Original price = $10
1/4 of original = $2.50
1/5 of original = $2.00
“On sale for more than $2.50 or more than $2.00” — so sale price > $2.00? That’s almost everything.
That can’t be right.
Perhaps it’s a typo, and it should be “on sale for LESS than 1/4 or 1/5” — meaning deep discount.
But the hint says: “change fractions to percents” — so likely they want you to recognize that 1/4 = 25%, 1/5 = 20%, and find something discounted by more than that.
Given the context, I believe the intended meaning is:
→ Find an item where the sale price is less than 75% of original (i.e., discount > 25%) OR less than 80% (discount > 20%).
But to match the wording literally: “on sale for more than either 1/4 or 1/5 of its original price” — that would mean sale price > 0.25×original or > 0.20×original — which is trivial.
I think we have to assume it’s a misstatement, and it means: “on sale for a price that represents a discount of more than 1/4 or 1/5” — i.e., you pay less than 3/4 or 4/5 of original.
To avoid confusion, let’s take the practical approach: Look for a sign that says “25% off” or “20% off” or more. Or calculate: if original is $10, sale is $7 or less → that’s more than 25% off.
✔ Example: Item originally $8, now $5 → discount is $3, which is 37.5% off → more than 25% → satisfies condition.
---
4. A decimal with 5 in the ones place
“Ones place” is the digit before the decimal. So we need something like 5._ _
Example: $5.29, 5 lbs of apples, 5.5 oz package.
✔ Look for any price or quantity starting with 5 — like $5.99, 5.0 liters, etc.
---
5. A number with at least 3 digits
Could be 100, 123, 999, etc. In a grocery store, this could be:
- Price: $1.23 (has 3 digits: 1,2,3)
- Weight: 16 oz (only 2 digits) → not enough
- Calories: 250 calories → 3 digits ✔
- Barcode numbers? Probably too long.
- Shelf number? Maybe.
Easiest: Look for a price like $1.25 → digits are 1,2,5 → three digits.
Or a nutrition label: “Sodium 320mg” → 3,2,0 → three digits.
✔ Any number from 100 to 999 works.
---
6. A money amount less than 50 cents
Look for items under $0.50.
Examples:
- Single candy bar ($0.35)
- Small fruit cup ($0.49)
- Coupon value? Maybe.
✔ Easy: Find anything priced at $0.25, $0.40, etc.
---
7. A number that is about 60% of the cost of a frozen meal
Pick a frozen meal. Say it costs $5.00.
60% of $5.00 = 0.60 × 5 = $3.00
So look for something around $3.00 — maybe a sandwich, salad, or drink combo.
✔ Example: Frozen meal = $6.00 → 60% = $3.60 → find item near $3.60.
---
8. A prime number more than 11
Prime numbers: divisible only by 1 and itself.
Primes after 11: 13, 17, 19, 23, 29, 31...
In a grocery store, where might you see these?
- Price: $1.39 → has 139? Not really.
- Quantity: 13 eggs? Unusual.
- Calories: 130? 130 is not prime.
- Wait — maybe aisle number? Shelf number? Product code?
Actually, prices often end in .99, but the whole dollar part might be prime.
Example: $13.99 → the 13 is a prime number >11 ✔
Or $17.50 → 17 is prime ✔
✔ Look for a price where the dollar amount is 13, 17, 19, etc.
---
9. A date that is either 2 days earlier or 2 days later than today
Today’s date: Let’s assume today is June 10, 2024.
Then 2 days earlier = June 8, 2024
2 days later = June 12, 2024
Where do you see dates in a grocery store?
- Expiration dates on milk, yogurt, meat
- “Best by” dates on packaged goods
- Weekly ad dates (“Sale ends June 12”)
✔ Look for any product with a date that matches ±2 days from today.
---
Now, since this is a scavenger hunt, you don’t need exact answers — just examples you can find. But for the purpose of completing the task, here are sample answers based on typical grocery store items:
---
Final Answer:
1. $2.95 (decimal with 9 in tenths place)
2. $3.00 item (if chocolate bar is $1.50)
3. Item originally $8, on sale for $5 (discount >25%)
4. $5.29 (5 in ones place)
5. 250 calories (number with 3 digits)
6. $0.45 candy bar (less than 50 cents)
7. $3.60 item (60% of $6.00 frozen meal)
8. $13.99 (13 is prime >11)
9. Expiration date: June 12 (if today is June 10)
---
1. A decimal with the number 9 in the tenths place
The “tenths place” is the first digit after the decimal point. So we need something like _._9_
Example: $2.95 → the 9 is in the tenths place.
✔ You could look for any item priced at $X.9Y — like $1.99, $3.90, etc.
---
2. Something that is about double the price of a chocolate bar
First, pick a chocolate bar. Let’s say it costs $1.50. Double that is $3.00.
So look for something around $3.00 — maybe a small bag of chips, a yogurt pack, or a bottle of juice.
✔ Example: If chocolate bar = $1.25, then double ≈ $2.50 → look for an item near that price.
---
3. Something that is on sale for more than either 1/4 or 1/5 of its original price
This means the discount is MORE than 25% (since 1/4 = 25%) OR more than 20% (since 1/5 = 20%).
Actually, re-reading: “on sale for more than either 1/4 or 1/5 of its original price” — that wording is tricky.
Wait — let’s parse it carefully:
> “Something that is on sale for more than either 1/4 or 1/5 of its original price.”
That would mean: Sale Price > (1/4 × Original) OR Sale Price > (1/5 × Original)
But that doesn’t make sense because if something is on sale, the sale price is usually LESS than original.
Ah — I think there’s a mistake in interpretation. The hint says: “Remember how to change fractions to percents.” And it says “on sale for more than either 1/4 or 1/5...”
Actually, rereading: It probably means the discount is more than 1/4 or 1/5 — meaning you save more than 25% or 20%.
But the wording says: “on sale for more than...” which implies the sale price is higher than those fractions — which would mean almost no discount.
Wait — perhaps it’s poorly worded, and it means: “on sale for less than 1/4 or 1/5 of original price”? But that would be a huge discount.
Alternatively, maybe it means: the sale price is more than 1/4 OR more than 1/5 — which is almost always true unless it’s free.
I think the intended meaning is: Find something where the discount is greater than 1/4 (25%) or 1/5 (20%). That makes sense for a scavenger hunt.
But the text says: “on sale for more than either 1/4 or 1/5 of its original price”
Let me try an example:
Original price = $10
1/4 of original = $2.50
1/5 of original = $2.00
“On sale for more than $2.50 or more than $2.00” — so sale price > $2.00? That’s almost everything.
That can’t be right.
Perhaps it’s a typo, and it should be “on sale for LESS than 1/4 or 1/5” — meaning deep discount.
But the hint says: “change fractions to percents” — so likely they want you to recognize that 1/4 = 25%, 1/5 = 20%, and find something discounted by more than that.
Given the context, I believe the intended meaning is:
→ Find an item where the sale price is less than 75% of original (i.e., discount > 25%) OR less than 80% (discount > 20%).
But to match the wording literally: “on sale for more than either 1/4 or 1/5 of its original price” — that would mean sale price > 0.25×original or > 0.20×original — which is trivial.
I think we have to assume it’s a misstatement, and it means: “on sale for a price that represents a discount of more than 1/4 or 1/5” — i.e., you pay less than 3/4 or 4/5 of original.
To avoid confusion, let’s take the practical approach: Look for a sign that says “25% off” or “20% off” or more. Or calculate: if original is $10, sale is $7 or less → that’s more than 25% off.
✔ Example: Item originally $8, now $5 → discount is $3, which is 37.5% off → more than 25% → satisfies condition.
---
4. A decimal with 5 in the ones place
“Ones place” is the digit before the decimal. So we need something like 5._ _
Example: $5.29, 5 lbs of apples, 5.5 oz package.
✔ Look for any price or quantity starting with 5 — like $5.99, 5.0 liters, etc.
---
5. A number with at least 3 digits
Could be 100, 123, 999, etc. In a grocery store, this could be:
- Price: $1.23 (has 3 digits: 1,2,3)
- Weight: 16 oz (only 2 digits) → not enough
- Calories: 250 calories → 3 digits ✔
- Barcode numbers? Probably too long.
- Shelf number? Maybe.
Easiest: Look for a price like $1.25 → digits are 1,2,5 → three digits.
Or a nutrition label: “Sodium 320mg” → 3,2,0 → three digits.
✔ Any number from 100 to 999 works.
---
6. A money amount less than 50 cents
Look for items under $0.50.
Examples:
- Single candy bar ($0.35)
- Small fruit cup ($0.49)
- Coupon value? Maybe.
✔ Easy: Find anything priced at $0.25, $0.40, etc.
---
7. A number that is about 60% of the cost of a frozen meal
Pick a frozen meal. Say it costs $5.00.
60% of $5.00 = 0.60 × 5 = $3.00
So look for something around $3.00 — maybe a sandwich, salad, or drink combo.
✔ Example: Frozen meal = $6.00 → 60% = $3.60 → find item near $3.60.
---
8. A prime number more than 11
Prime numbers: divisible only by 1 and itself.
Primes after 11: 13, 17, 19, 23, 29, 31...
In a grocery store, where might you see these?
- Price: $1.39 → has 139? Not really.
- Quantity: 13 eggs? Unusual.
- Calories: 130? 130 is not prime.
- Wait — maybe aisle number? Shelf number? Product code?
Actually, prices often end in .99, but the whole dollar part might be prime.
Example: $13.99 → the 13 is a prime number >11 ✔
Or $17.50 → 17 is prime ✔
✔ Look for a price where the dollar amount is 13, 17, 19, etc.
---
9. A date that is either 2 days earlier or 2 days later than today
Today’s date: Let’s assume today is June 10, 2024.
Then 2 days earlier = June 8, 2024
2 days later = June 12, 2024
Where do you see dates in a grocery store?
- Expiration dates on milk, yogurt, meat
- “Best by” dates on packaged goods
- Weekly ad dates (“Sale ends June 12”)
✔ Look for any product with a date that matches ±2 days from today.
---
Now, since this is a scavenger hunt, you don’t need exact answers — just examples you can find. But for the purpose of completing the task, here are sample answers based on typical grocery store items:
---
Final Answer:
1. $2.95 (decimal with 9 in tenths place)
2. $3.00 item (if chocolate bar is $1.50)
3. Item originally $8, on sale for $5 (discount >25%)
4. $5.29 (5 in ones place)
5. 250 calories (number with 3 digits)
6. $0.45 candy bar (less than 50 cents)
7. $3.60 item (60% of $6.00 frozen meal)
8. $13.99 (13 is prime >11)
9. Expiration date: June 12 (if today is June 10)
Parent Tip: Review the logic above to help your child master the concept of math scavenger hunt worksheet.
