Question

Question
Which situation could this expression represent?

20−8×2

Responses

Rupert has $20. He gives $8 to one friend and $2 to another friend. How much money does Rupert have left?
Rupert has $20. He gives $8 to one friend and $2 to another friend. How much money does Rupert have left?

Martin has $20. He buys 2 shirts that cost $8 each. How much money does Martin have left?
Martin has $20. He buys 2 shirts that cost $8 each. How much money does Martin have left?

Brennan has $20. He gives a friend $8. And another friend gives him $2. How much money does Brennan have now?
Brennan has $20. He gives a friend $8. And another friend gives him $2. How much money does Brennan have now?

Malik has $20. He spends $8 and then doubles what he has left. How much money does Malik have now?

Answer 1

To understand which situation the expression \(20 - 8 \times 2\) represents, we need to evaluate the order of operations (PEMDAS/BODMAS). The multiplication is performed before the subtraction.

1. **Evaluate the multiplication**: \(8 \times 2 = 16\)
2. **Perform the subtraction**: \(20 - 16 = 4\)

Now, let's analyze each provided situation:

1. **Rupert has $20. He gives $8 to one friend and $2 to another friend. How much money does Rupert have left?**
- This situation translates to \(20 - 8 - 2\), which is not represented by the expression \(20 - 8 \times 2\).

2. **Martin has $20. He buys 2 shirts that cost $8 each. How much money does Martin have left?**
- This situation also translates to \(20 - (8 \times 2)\) which simplifies to \(20 - 16\), aligning perfectly with the expression \(20 - 8 \times 2\).

3. **Brennan has $20. He gives a friend $8. And another friend gives him $2. How much money does Brennan have now?**
- This translates to \(20 - 8 + 2\), which does not match the expression \(20 - 8 \times 2\).

4. **Malik has $20. He spends $8 and then doubles what he has left. How much money does Malik have now?**
- This would represent \(20 - 8\) followed by doubling, not a direct representation of \(20 - 8 \times 2\).

The situation that best corresponds to the expression \(20 - 8 \times 2\) is:

**Martin has $20. He buys 2 shirts that cost $8 each. How much money does Martin have left?**