Question

which is greater
9,900,000,000 __9.9x10^10

Answer 1

To compare \( 9,900,000,000 \) and \( 9.9 \times 10^{10} \), we can convert both numbers into the same format.

1. **Convert \( 9,900,000,000 \)** into scientific notation:
\[
9,900,000,000 = 9.9 \times 10^9
\]

2. **Compare the two numbers**:
- \( 9.9 \times 10^{9} \) (from the first number)
- \( 9.9 \times 10^{10} \)

Now, since the exponents are different, we can compare them directly:
- \( 10^{9} < 10^{10} \)

This means \( 9.9 \times 10^{9} < 9.9 \times 10^{10} \).

Thus,
\[
9,900,000,000 < 9.9 \times 10^{10}
\]

So, \( 9.9 \times 10^{10} \) is greater.