Multiplication Problems 5.2A Answers worksheet with detailed solutions for various math exercises.

The image you've uploaded is a completed worksheet titled "Multiplication Problems 5.2A Answers" from Math-Salamanders.com, which provides solutions to a series of word problems involving multiplication and one division problem (noted as a trick question). Let's go through each problem, verify the answers, and explain the reasoning behind them.

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🔹 Problem 1:

A foot is about 30cm. A basketball court is 50ft wide. How many cm wide is this?

- Given:
- 1 foot ≈ 30 cm
- Width = 50 feet

- Calculation:
$ 30 \times 50 = 1500 $ cm

✔ Answer: 1500 cm
✔️ Correct. This is a straightforward unit conversion using multiplication.

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🔹 Problem 2:

A sailfish can swim at speeds of 30 metres per second. How far could it travel in 15 seconds at this speed?

- Given:
- Speed = 30 m/s
- Time = 15 seconds

- Formula: Distance = Speed × Time
$ 30 \times 15 = 450 $ metres

✔ Answer: 450 metres
✔️ Correct. Multiplying speed by time gives distance.

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🔹 Problem 3:

A pint is 568ml. How many ml in a 2 pint carton?

- Given:
- 1 pint = 568 ml
- 2 pints

- Calculation:
$ 568 \times 2 = 1136 $ ml

- Convert to litres (optional):
$ 1136 \div 1000 = 1.136 $ litres

✔ Answer: 1136 ml or 1.136 litres
✔️ Correct. Simple multiplication with an optional unit conversion.

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🔹 Problem 4:

A pair of scissors costs £2.50. How much would 4 pairs cost at this price?

- Given:
- Cost per pair = £2.50
- Number of pairs = 4

- Calculation:
$ 2.50 \times 4 = 10 $

⚠️ Note: The answer shows $10, but the currency used was £ (pounds), not dollars ($). This might be a typo.

✔ Correct Answer: £10
✘ The symbol should be £, not $. Otherwise, the math is correct.

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🔹 Problem 5:

An M&Ms chocolate packet contains 36 chocolate sweets. How many sweets in a multipack bag of 5 packets?

- Given:
- Sweets per packet = 36
- Number of packets = 5

- Calculation:
$ 36 \times 5 = 180 $

✔ Answer: 180 sweets
✔️ Correct. Simple multiplication.

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🔹 Problem 6:

There are on average 150 words on each page of the book 'How to Look after your Salamander'. The book contains 6 pages. How many words are there in the book?

- Given:
- Words per page = 150
- Pages = 6

- Calculation:
$ 150 \times 6 = 900 $

✔ Answer: 900 words
✔️ Correct. Multiply words per page by number of pages.

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🔹 Problem 7:

A cruise ship travels at 25 miles per hour. How many hours will it take to make a 100 mile journey?

- Given:
- Speed = 25 mph
- Distance = 100 miles

- Formula: Time = Distance ÷ Speed
$ 100 \div 25 = 4 $ hours

⚠️ This is not a multiplication problem — it’s a division problem.

✔ Answer: 4 hours
✔️ Mathematically correct, but labeled as a "trick question" because it uses division instead of multiplication.

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✔ Summary of Solutions:

| Problem | Question Type | Operation | Answer | Notes |
|--------|---------------------|---------------|------------------|-------|
| 1 | Unit Conversion | Multiplication | 1500 cm | ✔️ Correct |
| 2 | Distance | Multiplication | 450 metres | ✔️ Correct |
| 3 | Volume | Multiplication | 1136 ml / 1.136 L | ✔️ Correct |
| 4 | Cost | Multiplication | £10 | ✘ Symbol error ($ vs £) |
| 5 | Counting Items | Multiplication | 180 sweets | ✔️ Correct |
| 6 | Word Count | Multiplication | 900 words | ✔️ Correct |
| 7 | Time Calculation | Division | 4 hours | ✔️ Correct, but *trick* due to operation |

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📝 Final Thoughts:

- All multiplication-based problems were solved correctly.
- Problem 7 is a division problem disguised as a multiplication one — that's why it's called a “trick question.”
- There's a minor error in currency notation in Problem 4 (using $ instead of £).
- The worksheet effectively teaches students how to apply multiplication in real-world contexts, including conversions, rates, and scaling quantities.

Let me know if you'd like a printable version, a student-friendly explanation, or a version without answers!