Question 3
Back to Exercise
Three numbers are drawn as a bar model.
What is R?
- A 40
- B 20
- C 50 Correct
- D 60
Correct Answer: Option C
Remove the extra 10: 110 − 10 = 100
5 blocks = 100 → 1 block = 20
R = 2 × 20 + 10 = 50
Trap: 40 forgets R’s extra 10.
Answer: 50
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