Final Answer:
Problem 5 is the trick problem — it uses addition, not multiplication.
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Explanation:
Let’s go through each problem one by one to see which ones need multiplication.
1) 6 pens in 1 pack → 7 packs? → 6 × 7 = 42 pens →
✔ Multiplication.
2) 1 car has 4 wheels → 12 cars? → 4 × 12 = 48 wheels →
✔ Multiplication.
3) 1 paperclip needs 10cm wire → 11 paperclips? → 10 × 11 = 110cm →
✔ Multiplication.
4) 3 miles per day → 2 weeks (14 days)? → 3 × 14 = 42 miles →
✔ Multiplication.
5) 12 apples on Monday + 7 more on Tuesday → 12 + 7 = 19 apples →
✘ This is ADDITION, not multiplication. That’s the trick!
6) 1 multipack has 6 packets → 12 multipacks? → 6 × 12 = 72 packets →
✔ Multiplication.
7) 7 seconds per mile → 14 miles? → 7 × 14 = 98 seconds →
✔ Multiplication.
So, only problem 5 doesn’t use multiplication. It just adds two numbers together. That’s the trick!
Parent Tip: Review the logic above to help your child master the concept of 3rd grade math reasoning worksheet.