Let's solve each of these multiplication problems step by step and identify the "trick" problem that is
not a multiplication problem.
---
1) A scale model of a Boeing 747 is 7m long. The real plane is 10 times longer. How long is the actual plane?
- This is a multiplication problem:
$ 7 \times 10 = 70 $ meters
✔ Answer: 70 meters
---
2) A box of eggs holds 6 eggs. If I had 20 full boxes, how many eggs would I have?
- Multiply number of eggs per box by number of boxes:
$ 6 \times 20 = 120 $ eggs
✔ Answer: 120 eggs
---
3) A pack of 8 pens costs me $10. I buy 12 packs. How many pens have I bought?
- We are asked for the
number of pens, not cost.
Each pack has 8 pens → $ 8 \times 12 = 96 $ pens
✔ Answer: 96 pens
---
4) A box of chocolates contains 30 chocolates. How many chocolates in 4 boxes?
- $ 30 \times 4 = 120 $ chocolates
✔ Answer: 120 chocolates
---
5) How many days in 20 weeks?
- There are 7 days in a week → $ 7 \times 20 = 140 $ days
✔ Answer: 140 days
---
6) A paperclip is made from 10cm of wire. How many paperclips could be made from 70cm of wire?
- This is
division, not multiplication!
We divide total wire by wire per paperclip:
$ 70 \div 10 = 7 $ paperclips
✘ This is NOT a multiplication problem. It’s a division problem.
⚠️
This is the "trick" problem.
---
7) A ream contains 500 sheets of paper. How many sheets in 2 reams?
- $ 500 \times 2 = 1000 $ sheets
✔ Answer: 1000 sheets
---
8) How many seconds in 3 minutes?
- 1 minute = 60 seconds → $ 60 \times 3 = 180 $ seconds
✔ Answer: 180 seconds
---
✔ Final Answers:
1. 70 m
2. 120 eggs
3. 96 pens
4. 120 chocolates
5. 140 days
6.
7 paperclips (Division problem — the trick!)
7. 1000 sheets
8. 180 seconds
---
🚩 The "Trick" Problem:
>
Problem #6 is the one that is
not a multiplication problem.
It requires
division ($ 70 \div 10 $) to find how many paperclips can be made.
Even though it involves numbers and operations, the
operation needed is division, not multiplication.
---
✔ So,
the trick problem is #6.
You were supposed to spot that it's not a multiplication problem!
Let me know if you'd like a printable version or further explanation!
Parent Tip: Review the logic above to help your child master the concept of addition problem solving worksheet 4th grade.
