Question

Which number is the largest? 7.2 ⋅ 10−6, 3.09 ⋅ 103, 2.04 ⋅ 104, 5 ⋅ 103

Answer 1

Answer:

Option 3 - $2.04\times 10^4$

Step-by-step explanation:

Given : Numbers $7.2\times 10^{-6}$ , $3.09\times 10^3$$2.04\times 10^4$ and $5\times 10^3$

To find : Which number is largest ?

Solution :

We solve all number in standard form,

1) $7.2\times 10^{-6}=\frac{72}{10}\times \frac{1}{1000000}$

$7.2\times 10^{-6}=0.0000072$

2) $3.09\times 10^3=\frac{309}{100}\times 1000$

$3.09\times 10^3=3090$

3) $2.04\times 10^4=\frac{204}{100}\times 10000$

$2.04\times 10^4=20400$

4) $5\times 10^3=5\times 1000$

$5\times 10^3=5000$

The decimal number is the least number among all.

The five digit number is the greatest number among all.

So, 20400 is the greatest number.

Which means $2.04\times 10^4$ is the largest number.

Therefore, Option 3 is correct.

Answer 2

The equation whit the largest outcome is 5*103=515