Of course! Let's solve each of the four multi-step word problems one by one, explaining the key information and operations needed.
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Problem 1: Sashi’s Presents
> *Sashi has £624 to spend on presents for his family. He spends £122 on his mum, £113 on his dad and £109 on his grandmother. How much money does he have left?*
✔ Key Information:
- Total money: £624
- Spent on mum: £122
- Spent on dad: £113
- Spent on grandmother: £109
✔ Operations Needed:
- Add up all the amounts spent.
- Subtract that total from the original amount.
Step-by-step Solution:
1. Add the amounts spent:
£122 + £113 + £109 = ?
Let’s calculate:
- £122 + £113 = £235
- £235 + £109 =
£344
2. Subtract from total:
£624 - £344 =
£280
✔ Answer: Sashi has £280 left.
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Problem 2: Marie’s Reptile House
> *Marie works in the reptile house at the zoo. There are 229 snakes and 93 lizards in the reptile house. Marie arranges for 28 reptiles to be sent to a different zoo. How many reptiles will be left in the reptile house?*
✔ Key Information:
- Snakes: 229
- Lizards: 93
- Reptiles sent away: 28
✔ Operations Needed:
- Add snakes and lizards to get total reptiles.
- Subtract the number sent away.
Step-by-step Solution:
1. Total reptiles initially:
229 + 93 =
322
2. Subtract reptiles sent away:
322 - 28 =
294
✔ Answer: 294 reptiles will be left in the reptile house.
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Problem 3: Daniel’s Airport
> *Daniel works in an airport where 456 planes are based. 149 of these fly out and 22 more fly into the airport. How many planes are there now?*
✔ Key Information:
- Initial planes: 456
- Planes that fly out: 149 (this decreases the number)
- Planes that fly in: 22 (this increases the number)
✔ Operations Needed:
- Subtract planes that flew out.
- Add planes that flew in.
Step-by-step Solution:
1. Start with 456 planes.
2. Subtract 149 that flew out:
456 - 149 =
307
3. Add 22 that flew in:
307 + 22 =
329
✔ Answer: There are now 329 planes at the airport.
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Problem 4: Rachael’s Birthday Money
> *For her birthday, Rachael received £52 from her grandmother, £73 from her aunts and uncles and £18 from her friends. How much money did she receive in total?*
✔ Key Information:
- From grandmother: £52
- From aunts/uncles: £73
- From friends: £18
✔ Operation Needed:
- Add all the amounts together.
Step-by-step Solution:
£52 + £73 + £18 = ?
Let’s add step by step:
- £52 + £73 = £125
- £125 + £18 =
£143
✔ Answer: Rachael received £143 in total.
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✔ Final Answers Summary:
1.
£280
2.
294 reptiles
3.
329 planes
4.
£143
Each problem required identifying the starting value, changes (additions or subtractions), and performing the correct arithmetic operations. Great practice for multi-step reasoning!
Parent Tip: Review the logic above to help your child master the concept of multi step problem solving worksheet.