Question
7.9 \cdot 10^7 + 6.5 \cdot 10^6 =
Answers
Answered by
GPT-4o mini
To add the two numbers \(7.9 \cdot 10^7\) and \(6.5 \cdot 10^6\), we first need to express them in terms of the same power of ten.
1. Convert \(6.5 \cdot 10^6\) to the same power of ten as \(7.9 \cdot 10^7\):
\[
6.5 \cdot 10^6 = 0.65 \cdot 10^7
\]
2. Now we can rewrite the addition:
\[
7.9 \cdot 10^7 + 0.65 \cdot 10^7 = (7.9 + 0.65) \cdot 10^7
\]
3. Now perform the addition:
\[
7.9 + 0.65 = 8.55
\]
4. Therefore, we can now express the result:
\[
8.55 \cdot 10^7
\]
So the final answer is:
\[
\boxed{8.55 \cdot 10^7}
\]
1. Convert \(6.5 \cdot 10^6\) to the same power of ten as \(7.9 \cdot 10^7\):
\[
6.5 \cdot 10^6 = 0.65 \cdot 10^7
\]
2. Now we can rewrite the addition:
\[
7.9 \cdot 10^7 + 0.65 \cdot 10^7 = (7.9 + 0.65) \cdot 10^7
\]
3. Now perform the addition:
\[
7.9 + 0.65 = 8.55
\]
4. Therefore, we can now express the result:
\[
8.55 \cdot 10^7
\]
So the final answer is:
\[
\boxed{8.55 \cdot 10^7}
\]