The number 631927 expressed in standard form is:
6.31297 x 10⁻⁵.
6.3 x 10⁵.
63.1927 x 10⁴.
6.31927 x 10⁵.
Given that 0.00078 can be written as a × 10n,
where 1 < a < 10, then the value of n is:
4.
-4.
3.
-3.
The number 163.35 × 10⁻³ expressed in standard form is:
1.6335 × 10⁻¹.
16.335 × 10⁻².
1.6335 × 10¹.
16335 × 10⁻².
The number 234.5 × 10³ written in standard form is:
2.345 × 10².
2.345 × 10⁵.
2.345 × 10¹.
2.345 × 10⁴.
0.00875 can be written in standard form as:
875 × 10⁴.
8.75 × 10⁻³.
8.75 × 10³.
8.75 × 10⁻⁴.
