Answers

2015-01-13T14:22:12+08:00
Remember the rule: the base number has to be less than 10 and greater than 1
our first digits for the base number is the first digits of the number, but we don't include zeros after the last nonzero digit. Since there are no zeros, we include all of them in the base number.

Our form becomes 9.87654321 (greater than 10, less than 1)
Next: we count how many times the place dot (decimal) has to move (could be left or right) to be correct to the number. For this case, we move it to the right.
Counting how many times the dot has to skip a place value, we have 8.
so now we have 10^8

987 654 321 in scientific notation is 9.87654321 x 10 ^ 8
0
2015-01-14T08:39:39+08:00
Write the numbers with digits more than 0...
987654321 x 10⁸
( Count the numbers after the first digit) = 8
0