Naming and Drawing Alkanes, Alkenes and Alkynes - Free Printable
Educational worksheet: Naming and Drawing Alkanes, Alkenes and Alkynes. Download and print for classroom or home learning activities.
JPG
270×350
8.1 KB
Free · Personal Use
Quality Assured by Worksheets Library Team
Reviewed for educational accuracy and age-appropriateness
ID: #1729623
⭐
Show Answer Key & Explanations
Step-by-step solution for: Naming and Drawing Alkanes, Alkenes and Alkynes
▼
Show Answer Key & Explanations
Step-by-step solution for: Naming and Drawing Alkanes, Alkenes and Alkynes
Let’s solve each problem step by step. We’re converting between months and years, or days and weeks. Remember:
- 1 year = 12 months → so to convert months to years, divide by 12.
- 1 week = 7 days → so to convert days to weeks, divide by 7.
We’ll go one by one.
---
1. 3 month(s) = ? year
3 ÷ 12 = 0.25
→ So, 3 months = 0.25 year
---
2. 2.33 month(s) = ? year
2.33 ÷ 12 ≈ 0.194166...
Rounded to two decimal places: 0.19 year
*(Note: If we keep more precision, it’s about 0.194, but since the input has 2 decimals, outputting 2 decimals is fine.)*
Wait — let’s check: 2.33 / 12 = ?
Do exact division:
2.33 ÷ 12 = 233/1200 = 0.194166...
But maybe they expect rounding to 2 decimals? Let’s see other problems for pattern.
Actually, looking at later answers like “2.25” or “5.6”, sometimes they use 1 or 2 decimals. Let’s be precise unless told otherwise.
But in school math, often round to 2 decimals if needed.
So 2.33 ÷ 12 = 0.194166… → 0.19 year (if rounded to 2 decimals)
But wait — let me recalculate with calculator-style:
2.33 ÷ 12 = 0.1941666667 → so approximately 0.19
However, let’s hold on — maybe we should keep as fraction? No, the question uses decimals.
I think 0.19 is acceptable.
But let’s double-check all.
Actually, perhaps better to write as exact decimal where possible.
Alternatively, maybe they want simplified fractions? But no, inputs are decimals.
Let’s proceed with decimal answers, rounded reasonably.
---
3. 2.16 month(s) = ? week
First, convert months to days? Wait — how many days in a month?
This is tricky. In real life, months vary. But in school problems, often assume:
→ 1 month = 30 days (approximate)
Then 1 week = 7 days
So:
2.16 months × 30 days/month = 64.8 days
Now convert to weeks: 64.8 ÷ 7 ≈ 9.257 weeks
Rounded to 2 decimals: 9.26 weeks
But let’s confirm assumption.
Some systems use 1 month = 4 weeks exactly? That would be 28 days, which is not accurate.
Better to use 30 days per month for approximation.
Yes, standard in such conversions unless specified.
So:
2.16 × 30 = 64.8 days
64.8 ÷ 7 = 9.257142... → 9.26 weeks
---
4. 3.6 month(s) = ? year
3.6 ÷ 12 = 0.3
Exactly! Because 3.6 / 12 = 36/120 = 3/10 = 0.3
→ 0.3 year
---
5. 4 mth of 2.2.3 month(s) = ? year
Wait — this looks messy. Probably typo.
Looking back: “4 mth of 2.2.3 month(s)” — that doesn’t make sense.
Perhaps it’s “4 months of 2.23 months”? Still odd.
Wait — original image says: “4 mth of 2.2.3 month(s)”
That must be a typo. Likely meant: “4 months = ? year” or “2.23 months = ? year”
But it says “4 mth of 2.2.3” — maybe it’s “4 months and 2.23 months”? No.
Another possibility: perhaps it’s “4 months = ? year” and separately “2.23 months = ? year” — but written together.
Looking at layout: each line has two parts? No, actually in the image, each row has two separate equations.
Wait — re-examining user input:
The text is:
```
3 month(s) = ? year 2.33 month(s) = ? year
2.16 month(s) = ? week 3.6 month(s) = ? year
4 mth of 2.2.3 month(s) = ? year 2.25 month(s) = ? year
25 month(s) = ? week 5.6 month(s) = ? year
2.2 month(s) = ? week 14.9 month(s) = ? year
```
Ah! I see — the third line first part is likely a typo: “4 mth of 2.2.3” probably means “4 months = ? year” and the “of 2.2.3” is garbage or misread.
Because “2.2.3” is invalid number.
Probably OCR error or handwriting issue.
Most logical: it should be “4 months = ? year”
Similarly, others are clear.
So I’ll assume: “4 months = ? year”
4 ÷ 12 = 1/3 ≈ 0.333... → 0.33 year (rounded to 2 decimals)
If exact fraction, but since others use decimals, 0.33 is fine.
---
6. 2.25 month(s) = ? year
2.25 ÷ 12 = ?
2.25 / 12 = 225/1200 = 9/48 = 3/16 = 0.1875
→ 0.1875 year, or rounded to 2 decimals: 0.19 year
But 0.1875 is exact. Since 2.25 has 2 decimals, maybe keep 4? Or simplify.
In context, perhaps leave as 0.1875 or round.
Looking at other answers, some are exact like 0.3, some approximate.
I think for consistency, if it terminates, write full; else round.
0.1875 is exact → so 0.1875 year
But let’s see what’s expected. Maybe round to 2 decimals: 0.19
I’ll note both, but decide later.
---
7. 25 month(s) = ? week
Again, need days.
Assume 1 month = 30 days
25 × 30 = 750 days
750 ÷ 7 ≈ 107.142857... → 107.14 weeks (rounded to 2 decimals)
---
8. 5.6 month(s) = ? year
5.6 ÷ 12 = ?
5.6 / 12 = 56/120 = 7/15 ≈ 0.4666...
→ 0.47 year (rounded to 2 decimals)
---
9. 2.2 month(s) = ? week
2.2 × 30 = 66 days
66 ÷ 7 ≈ 9.42857... → 9.43 weeks
---
10. 14.9 month(s) = ? year
14.9 ÷ 12 = ?
14.9 / 12 = 149/120 ≈ 1.241666...
→ 1.24 year (rounded to 2 decimals)
---
Now, let’s compile all answers with consistent rounding (to 2 decimal places unless exact).
Also, fix the typo in #5: assume "4 months = ? year"
And for #2: 2.33 / 12 = 0.194166... → 0.19
#6: 2.25 / 12 = 0.1875 → if we round to 2 decimals, 0.19; but 0.1875 is exact. However, since others are rounded, perhaps round all to 2 decimals for consistency.
Let me check common practice: in such worksheets, usually round to 2 decimals.
So:
1. 3 months = 3/12 = 0.25 → 0.25
2. 2.33 / 12 = 0.194166... → 0.19
3. 2.16 * 30 / 7 = 64.8 / 7 = 9.257... → 9.26
4. 3.6 / 12 = 0.3 → 0.30 (to match 2 decimals) or just 0.3? But 0.3 is same as 0.30.
To be uniform, write all with 2 decimals.
So 0.3 → 0.30
5. 4 / 12 = 0.333... → 0.33
6. 2.25 / 12 = 0.1875 → 0.19 (rounded)
7. 25 * 30 / 7 = 750 / 7 ≈ 107.142857 → 107.14
8. 5.6 / 12 = 0.4666... → 0.47
9. 2.2 * 30 / 7 = 66 / 7 ≈ 9.42857 → 9.43
10. 14.9 / 12 ≈ 1.241666 → 1.24
Now, for the third item: “4 mth of 2.2.3” — I think it's safe to assume it's "4 months = ? year" as discussed.
Perhaps "2.2.3" is a miswrite of "2.23", but then "4 mth of 2.23" doesn't make sense.
Another interpretation: maybe it's "4 months and 2.23 months" total? But that would be 6.23 months, which is unusual.
Given the pattern, each cell is independent, so likely typo, and should be "4 months = ? year".
I'll go with that.
Final Answers:
Left column:
1. 0.25 year
2. 9.26 week
3. 0.33 year [for 4 months]
4. 107.14 week
5. 9.43 week
Right column:
1. 0.19 year
2. 0.30 year
3. 0.19 year [for 2.25 months, rounded]
4. 0.47 year
5. 1.24 year
But let's list them in order as per the grid.
The problems are arranged in rows, each row has two problems.
So:
Row 1:
- 3 months = ? year → 0.25
- 2.33 months = ? year → 0.19
Row 2:
- 2.16 months = ? week → 9.26
- 3.6 months = ? year → 0.30
Row 3:
- 4 months = ? year → 0.33 (assuming correction)
- 2.25 months = ? year → 0.19 (since 0.1875 rounded to 2 decimals is 0.19)
Row 4:
- 25 months = ? week → 107.14
- 5.6 months = ? year → 0.47
Row 5:
- 2.2 months = ? week → 9.43
- 14.9 months = ? year → 1.24
For 2.25 months to year: 2.25 / 12 = 0.1875. If we round to two decimal places, it's 0.19. Yes.
Similarly, 3.6 / 12 = 0.3, which is 0.30 if we write two decimals.
In the answer, we can write 0.3 as 0.30 for consistency, but it's not necessary. However, to avoid confusion, I'll write all with two decimal places.
So:
- 0.25
- 0.19
- 9.26
- 0.30
- 0.33
- 0.19
- 107.14
- 0.47
- 9.43
- 1.24
Now, for the final answer, since the user didn't specify format, I'll list them in order as they appear, left to right, top to bottom.
So the answers are:
0.25, 0.19, 9.26, 0.30, 0.33, 0.19, 107.14, 0.47, 9.43, 1.24
But let's verify calculations once more.
Recalculate key ones:
- 2.33 / 12: 2.33 ÷ 12 = 0.194166... → rounds to 0.19 ✓
- 2.16 * 30 = 64.8; 64.8 / 7 = 9.25714... → 9.26 ✓
- 3.6 / 12 = 0.3 → 0.30 ✓
- 4 / 12 = 0.333... → 0.33 ✓
- 2.25 / 12 = 0.1875 → rounds to 0.19 ✓ (since 0.1875, the third decimal is 7>5, so round up 8 to 9? Wait no: 0.1875 to two decimals: look at third digit is 7, which is >=5, so round up the second digit: 8 becomes 9, so 0.19 ✓)
- 25*30=750; 750/7=107.142857... → 107.14 ✓
- 5.6/12=0.4666... → third digit 6>=5, so 0.47 ✓
- 2.2*30=66; 66/7≈9.42857 → third digit 8>=5, so 9.43 ✓
- 14.9/12=1.241666... → third digit 1<5, so 1.24 ✓
All good.
Now, for the problematic one: "4 mth of 2.2.3" — I think it's a typo and should be "4 months". If it were something else, it doesn't make sense. So I'll proceed.
Final Answer:
0.25, 0.19, 9.26, 0.30, 0.33, 0.19, 107.14, 0.47, 9.43, 1.24
But to present clearly, perhaps list them as per the rows.
Since the user might expect the answers in the same order as the problems, I'll write them in sequence.
Note: In row 3, first problem is assumed to be 4 months = ? year.
If the original was different, but based on logic, this is best.
So, Final Answer:
- 1 year = 12 months → so to convert months to years, divide by 12.
- 1 week = 7 days → so to convert days to weeks, divide by 7.
We’ll go one by one.
---
1. 3 month(s) = ? year
3 ÷ 12 = 0.25
→ So, 3 months = 0.25 year
---
2. 2.33 month(s) = ? year
2.33 ÷ 12 ≈ 0.194166...
Rounded to two decimal places: 0.19 year
*(Note: If we keep more precision, it’s about 0.194, but since the input has 2 decimals, outputting 2 decimals is fine.)*
Wait — let’s check: 2.33 / 12 = ?
Do exact division:
2.33 ÷ 12 = 233/1200 = 0.194166...
But maybe they expect rounding to 2 decimals? Let’s see other problems for pattern.
Actually, looking at later answers like “2.25” or “5.6”, sometimes they use 1 or 2 decimals. Let’s be precise unless told otherwise.
But in school math, often round to 2 decimals if needed.
So 2.33 ÷ 12 = 0.194166… → 0.19 year (if rounded to 2 decimals)
But wait — let me recalculate with calculator-style:
2.33 ÷ 12 = 0.1941666667 → so approximately 0.19
However, let’s hold on — maybe we should keep as fraction? No, the question uses decimals.
I think 0.19 is acceptable.
But let’s double-check all.
Actually, perhaps better to write as exact decimal where possible.
Alternatively, maybe they want simplified fractions? But no, inputs are decimals.
Let’s proceed with decimal answers, rounded reasonably.
---
3. 2.16 month(s) = ? week
First, convert months to days? Wait — how many days in a month?
This is tricky. In real life, months vary. But in school problems, often assume:
→ 1 month = 30 days (approximate)
Then 1 week = 7 days
So:
2.16 months × 30 days/month = 64.8 days
Now convert to weeks: 64.8 ÷ 7 ≈ 9.257 weeks
Rounded to 2 decimals: 9.26 weeks
But let’s confirm assumption.
Some systems use 1 month = 4 weeks exactly? That would be 28 days, which is not accurate.
Better to use 30 days per month for approximation.
Yes, standard in such conversions unless specified.
So:
2.16 × 30 = 64.8 days
64.8 ÷ 7 = 9.257142... → 9.26 weeks
---
4. 3.6 month(s) = ? year
3.6 ÷ 12 = 0.3
Exactly! Because 3.6 / 12 = 36/120 = 3/10 = 0.3
→ 0.3 year
---
5. 4 mth of 2.2.3 month(s) = ? year
Wait — this looks messy. Probably typo.
Looking back: “4 mth of 2.2.3 month(s)” — that doesn’t make sense.
Perhaps it’s “4 months of 2.23 months”? Still odd.
Wait — original image says: “4 mth of 2.2.3 month(s)”
That must be a typo. Likely meant: “4 months = ? year” or “2.23 months = ? year”
But it says “4 mth of 2.2.3” — maybe it’s “4 months and 2.23 months”? No.
Another possibility: perhaps it’s “4 months = ? year” and separately “2.23 months = ? year” — but written together.
Looking at layout: each line has two parts? No, actually in the image, each row has two separate equations.
Wait — re-examining user input:
The text is:
```
3 month(s) = ? year 2.33 month(s) = ? year
2.16 month(s) = ? week 3.6 month(s) = ? year
4 mth of 2.2.3 month(s) = ? year 2.25 month(s) = ? year
25 month(s) = ? week 5.6 month(s) = ? year
2.2 month(s) = ? week 14.9 month(s) = ? year
```
Ah! I see — the third line first part is likely a typo: “4 mth of 2.2.3” probably means “4 months = ? year” and the “of 2.2.3” is garbage or misread.
Because “2.2.3” is invalid number.
Probably OCR error or handwriting issue.
Most logical: it should be “4 months = ? year”
Similarly, others are clear.
So I’ll assume: “4 months = ? year”
4 ÷ 12 = 1/3 ≈ 0.333... → 0.33 year (rounded to 2 decimals)
If exact fraction, but since others use decimals, 0.33 is fine.
---
6. 2.25 month(s) = ? year
2.25 ÷ 12 = ?
2.25 / 12 = 225/1200 = 9/48 = 3/16 = 0.1875
→ 0.1875 year, or rounded to 2 decimals: 0.19 year
But 0.1875 is exact. Since 2.25 has 2 decimals, maybe keep 4? Or simplify.
In context, perhaps leave as 0.1875 or round.
Looking at other answers, some are exact like 0.3, some approximate.
I think for consistency, if it terminates, write full; else round.
0.1875 is exact → so 0.1875 year
But let’s see what’s expected. Maybe round to 2 decimals: 0.19
I’ll note both, but decide later.
---
7. 25 month(s) = ? week
Again, need days.
Assume 1 month = 30 days
25 × 30 = 750 days
750 ÷ 7 ≈ 107.142857... → 107.14 weeks (rounded to 2 decimals)
---
8. 5.6 month(s) = ? year
5.6 ÷ 12 = ?
5.6 / 12 = 56/120 = 7/15 ≈ 0.4666...
→ 0.47 year (rounded to 2 decimals)
---
9. 2.2 month(s) = ? week
2.2 × 30 = 66 days
66 ÷ 7 ≈ 9.42857... → 9.43 weeks
---
10. 14.9 month(s) = ? year
14.9 ÷ 12 = ?
14.9 / 12 = 149/120 ≈ 1.241666...
→ 1.24 year (rounded to 2 decimals)
---
Now, let’s compile all answers with consistent rounding (to 2 decimal places unless exact).
Also, fix the typo in #5: assume "4 months = ? year"
And for #2: 2.33 / 12 = 0.194166... → 0.19
#6: 2.25 / 12 = 0.1875 → if we round to 2 decimals, 0.19; but 0.1875 is exact. However, since others are rounded, perhaps round all to 2 decimals for consistency.
Let me check common practice: in such worksheets, usually round to 2 decimals.
So:
1. 3 months = 3/12 = 0.25 → 0.25
2. 2.33 / 12 = 0.194166... → 0.19
3. 2.16 * 30 / 7 = 64.8 / 7 = 9.257... → 9.26
4. 3.6 / 12 = 0.3 → 0.30 (to match 2 decimals) or just 0.3? But 0.3 is same as 0.30.
To be uniform, write all with 2 decimals.
So 0.3 → 0.30
5. 4 / 12 = 0.333... → 0.33
6. 2.25 / 12 = 0.1875 → 0.19 (rounded)
7. 25 * 30 / 7 = 750 / 7 ≈ 107.142857 → 107.14
8. 5.6 / 12 = 0.4666... → 0.47
9. 2.2 * 30 / 7 = 66 / 7 ≈ 9.42857 → 9.43
10. 14.9 / 12 ≈ 1.241666 → 1.24
Now, for the third item: “4 mth of 2.2.3” — I think it's safe to assume it's "4 months = ? year" as discussed.
Perhaps "2.2.3" is a miswrite of "2.23", but then "4 mth of 2.23" doesn't make sense.
Another interpretation: maybe it's "4 months and 2.23 months" total? But that would be 6.23 months, which is unusual.
Given the pattern, each cell is independent, so likely typo, and should be "4 months = ? year".
I'll go with that.
Final Answers:
Left column:
1. 0.25 year
2. 9.26 week
3. 0.33 year [for 4 months]
4. 107.14 week
5. 9.43 week
Right column:
1. 0.19 year
2. 0.30 year
3. 0.19 year [for 2.25 months, rounded]
4. 0.47 year
5. 1.24 year
But let's list them in order as per the grid.
The problems are arranged in rows, each row has two problems.
So:
Row 1:
- 3 months = ? year → 0.25
- 2.33 months = ? year → 0.19
Row 2:
- 2.16 months = ? week → 9.26
- 3.6 months = ? year → 0.30
Row 3:
- 4 months = ? year → 0.33 (assuming correction)
- 2.25 months = ? year → 0.19 (since 0.1875 rounded to 2 decimals is 0.19)
Row 4:
- 25 months = ? week → 107.14
- 5.6 months = ? year → 0.47
Row 5:
- 2.2 months = ? week → 9.43
- 14.9 months = ? year → 1.24
For 2.25 months to year: 2.25 / 12 = 0.1875. If we round to two decimal places, it's 0.19. Yes.
Similarly, 3.6 / 12 = 0.3, which is 0.30 if we write two decimals.
In the answer, we can write 0.3 as 0.30 for consistency, but it's not necessary. However, to avoid confusion, I'll write all with two decimal places.
So:
- 0.25
- 0.19
- 9.26
- 0.30
- 0.33
- 0.19
- 107.14
- 0.47
- 9.43
- 1.24
Now, for the final answer, since the user didn't specify format, I'll list them in order as they appear, left to right, top to bottom.
So the answers are:
0.25, 0.19, 9.26, 0.30, 0.33, 0.19, 107.14, 0.47, 9.43, 1.24
But let's verify calculations once more.
Recalculate key ones:
- 2.33 / 12: 2.33 ÷ 12 = 0.194166... → rounds to 0.19 ✓
- 2.16 * 30 = 64.8; 64.8 / 7 = 9.25714... → 9.26 ✓
- 3.6 / 12 = 0.3 → 0.30 ✓
- 4 / 12 = 0.333... → 0.33 ✓
- 2.25 / 12 = 0.1875 → rounds to 0.19 ✓ (since 0.1875, the third decimal is 7>5, so round up 8 to 9? Wait no: 0.1875 to two decimals: look at third digit is 7, which is >=5, so round up the second digit: 8 becomes 9, so 0.19 ✓)
- 25*30=750; 750/7=107.142857... → 107.14 ✓
- 5.6/12=0.4666... → third digit 6>=5, so 0.47 ✓
- 2.2*30=66; 66/7≈9.42857 → third digit 8>=5, so 9.43 ✓
- 14.9/12=1.241666... → third digit 1<5, so 1.24 ✓
All good.
Now, for the problematic one: "4 mth of 2.2.3" — I think it's a typo and should be "4 months". If it were something else, it doesn't make sense. So I'll proceed.
Final Answer:
0.25, 0.19, 9.26, 0.30, 0.33, 0.19, 107.14, 0.47, 9.43, 1.24
But to present clearly, perhaps list them as per the rows.
Since the user might expect the answers in the same order as the problems, I'll write them in sequence.
Note: In row 3, first problem is assumed to be 4 months = ? year.
If the original was different, but based on logic, this is best.
So, Final Answer:
Parent Tip: Review the logic above to help your child master the concept of alkenes worksheet.