Question

Place the numbers in descending order.

2.3 × 10−10
2.3

×

10
−
10
; 3.2 × 10−10
3.2

×

10
−
10
; 2.3 × 10−12
2.3

×

10
−
12
; 2.3 × 10−8
2.3

×

10
−
8

(2 points)
; ; ;

Answer 1

To arrange the numbers in descending order, we first need to express all of them in standard decimal form so we can easily compare them.

1. **2.3 × 10⁻¹⁰** = 0.00000000023
2. **3.2 × 10⁻¹⁰** = 0.00000000032
3. **2.3 × 10⁻¹²** = 0.0000000000023
4. **2.3 × 10⁻⁸** = 0.000000023

Now, we can compare the decimal values:

- 2.3 × 10⁻⁸ = 0.000000023 (largest)
- 3.2 × 10⁻¹⁰ = 0.00000000032
- 2.3 × 10⁻¹⁰ = 0.00000000023
- 2.3 × 10⁻¹² = 0.0000000000023 (smallest)

Putting them in descending order:

1. **2.3 × 10⁻⁸**
2. **3.2 × 10⁻¹⁰**
3. **2.3 × 10⁻¹⁰**
4. **2.3 × 10⁻¹²**

So the final answer is:

**2.3 × 10⁻⁸, 3.2 × 10⁻¹⁰, 2.3 × 10⁻¹⁰, 2.3 × 10⁻¹²**