forty-five billion
9 billion x 0.2 = 1.8 billion
There are 10 hundred millions in a billion, so 50*10 = 500.
30.6 billion.
468 billion
90 billion trillion.
500% of 9 Billion would be: 9 Billion (100% of 9 Billion) + 9 Billion (200% of 9 Billion) + 9 Billion (300% of 9 Billion) + 9 Billion (400% of 9 Billion) + 9 Billion (500% of 9 Billion) = 45 Billion.
5.4 × 1022
9 times 10 to the power 6
7,000,000,000. Which is 7 billion.
To write 2.35 billion in standard form, you express it as a number multiplied by a power of ten. Since a billion is (10^9), you can write 2.35 billion as (2.35 \times 10^9).
500000000, using the british billion, 10^9 500000000000, using the American billion, 10^12
1.8 billion.