From first principles: ax10^4 is the same as a0000. ax10^2 is the same as a00
So, a0000
a00
a0a00
If we look at this pattern and compare to the number in the question:
a0a00
| |
24240
the a0 corresponds to the numbers 24, so a is 2.4
2.4x10^4-2.4x10^2:
Write them out the same as before:
24000
240
23760
Then as standard form, put a decimal after the first digit
2.3760
then count how many places from the end of the number the deciaml has moved:
4
So, it's 2.3760x10^4
0 isn't necessary, so dont need to write it in our final answer
2.376x10^4