Question

1.5 x 10^8 need help

Answer 1

When I do problems like this, I think of skipping the decimal point for each number. So think about it as $10^8*1.50000000$

then for each count, move the decimal point on place

$10^8*1.50000000$

$10^7*15.0000000$

$10^6*150.000000$

$10^5*1500.00000$

$10^4*15000.0000$

$10^3*150000.000$

$10^2*1500000.00$

$10^1*15000000.0$

$10^0*150000000.$

Meaning that the answer is

150,000,000

Answer 2

the answer is 150000000